a 12.96 g bullet is fired into a 5.000 kg ballistic pendulum suspended by 2.000 m cords. when the bullet strikes the pendulum block it embeds into the block, making this an (elastic/inelastic)
Answers
Since the bullet embeds into the pendulum block, this is an inelastic collision.
Based on the given information, we have a bullet with a mass of 12.96 g (0.01296 kg) being fired into a ballistic pendulum. The pendulum has a mass of 5.000 kg and is suspended by 2.000 m cords.
To determine whether the collision between the bullet and the pendulum is elastic or inelastic, we need to analyze the conservation of momentum and the behavior of the system after the collision.
1. Conservation of momentum:
In an elastic collision, momentum is conserved. In an inelastic collision, momentum is not conserved.
Before the collision, the bullet has a velocity (v_bullet) and the pendulum is at rest, so its velocity (v_pendulum) is zero. The total momentum before the collision is the sum of the momenta of the bullet and the pendulum:
Total momentum before = momentum of bullet + momentum of pendulum
= (mass of bullet) × (velocity of bullet) + (mass of pendulum) × (velocity of pendulum)
= (0.01296 kg) × (v_bullet) + (5.000 kg) × (0)
After the collision, the bullet embeds into the pendulum block, and they move together as a combined system. Let's assume their combined velocity after the collision is v_combined.
Total momentum after = (mass of combined system) × (v_combined)
= (mass of bullet + mass of pendulum) × (v_combined)
= (0.01296 kg + 5.000 kg) × (v_combined)
If the total momentum before the collision is equal to the total momentum after the collision, then momentum is conserved, indicating an elastic collision. If they are not equal, momentum is not conserved, indicating an inelastic collision.
2. Behavior of the system after the collision:
In an elastic collision, kinetic energy is conserved. In an inelastic collision, kinetic energy is not conserved.
To determine whether kinetic energy is conserved, we need to compare the initial kinetic energy (before the collision) and the final kinetic energy (after the collision).
Initial kinetic energy = (1/2) × (mass of bullet) × (velocity of bullet)^2
Final kinetic energy = (1/2) × (mass of combined system) × (v_combined)^2
If the initial kinetic energy is equal to the final kinetic energy, then kinetic energy is conserved, indicating an elastic collision. If they are not equal, kinetic energy is not conserved, indicating an inelastic collision.
By analyzing the problem, we can see that the bullet embeds into the pendulum block, causing them to move together as a combined system. In this case, the collision is inelastic. The bullet and the pendulum block have a common final velocity (v_combined) after the collision, and momentum is not conserved because the pendulum was initially at rest.
It's worth noting that the conservation of energy principles can also be applied to further analyze the collision and calculate the final velocity (v_combined) or other relevant quantities if needed.
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Related Questions
Jeff throws a ball straight up. For which situation is the vertical velocity zero?
a. on the way up
b. at the top
c. on the way back down
d. none of the above
Answers
Answer:
b. at the top
Explanation:
At the top of the climb, the vertical velocity of Jeff's throw has a value of zero.
Vertical velocity in this instance is acting against the acceleration due to gravity.
At the top of the thrown, the force of the throw becomes zero and the velocity also becomes zero. As the body finds it way downward, it begins to fall freely. The fall is due to the acceleration due to gravity which is experienced by every object on earth.The velocity of a bus increases by 20 m/s in 80 seconds. What is the
acceleration of the bus?
A. 0.25 m/s2
B. 4 m/s2
C. 60 m/s2
D. 100 m/s2
Answers
Answer:
A
Explanation:
velocity is measured in m/s
acceleration has units m/s^2
so divide the velocity change by the time change:
20 m/s / 80 s = 20 / 80 = .25 m/s^2
if a pair of reading glasses has power of 2.5 d lenses. what is the focal length of these lenses?
Answers
The focal length of lenses with a power of 2.5 d is 0.4 meters or 40 centimeters. This is because the focal length is the reciprocal of the power in diopters, so 1/2.5 d = 0.4 m.
It's important to understand what power and focal length mean in the context of lenses. Power is a measure of how strongly a lens refracts (bends) light. A lens with a high power will bend light more than a lens with a lower power. Power is measured in diopters, which is the inverse of the focal length in meters.
The focal length is the distance between the lens and the point where light converges (or diverges) after passing through the lens. For convex (converging) lenses like those in reading glasses, the focal length is positive and is the distance from the lens where parallel light rays converge to a point.
In the case of lenses with a power of 2.5 d, we know that the power is 2.5 diopters. To find the focal length, we take the reciprocal of the power: 1/2.5 d = 0.4 m. This means that light rays passing through the lens will converge to a point 0.4 meters (or 40 centimeters) away from the lens.
So, lenses with a power of 2.5 d have a focal length of 0.4 meters. This means that they are suitable for correcting moderate farsightedness (hyperopia) or presbyopia, which is a condition where the eyes lose their ability to focus on nearby objects due to age. The lenses will cause light rays to converge at a point 0.4 meters away from the lens, allowing the wearer to see nearby objects more clearly.
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what does a blue shift in light from stars indicate?
Answers
Answer:
If a star is moving towards the earth, its light is shifted to higher frequencies on the color spectrum (towards the green/blue/violet/ultraviolet/x-ray/gamma-ray end of the spectrum). A higher frequency shift is called a "blue shift".
Explanation:
It just means that the entire spectrum is shifted up in frequency.
Consider a proton and an electron placed near one another with no other objects close by. They would accelerate away from each other. remain motionless. move away from each other at constant speed. accelerate toward each other. > Moving to another question will save this response.
Answers
The proton and electron, being opposite charges, would accelerate toward each other. Thus, 3rd option is correct.
How to determine force between two charged particles?
According to Coulomb's law, the force between two charged particles is given by:
F = (k * |q₁ * q₂|) / r²
where F is the force between the particles, k is the electrostatic constant, q₁ and q₂ are the magnitudes of the charges of the particles (in this case, the charge of the proton and the charge of the electron), and r is the distance between the particles.
In the case of a proton and an electron, the proton has a positive charge (+e) and the electron has a negative charge (-e), where e is the elementary charge. Since the charges are opposite in sign, the product q₁ * q₂ is negative.
Therefore, the force between the proton and the electron is attractive, causing them to accelerate toward each other. This acceleration will continue until they collide or until external factors come into play (such as the presence of other particles or forces) that may alter their motion.
It's important to note that in a typical atomic or molecular system, electrons are usually bound to nuclei due to the attractive electrostatic forces between them. However, if an electron and a proton are initially separated and have no other influences, they will accelerate toward each other due to their opposite charges.
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A pendulum bob swings along its characteristic arc as shown. Rank the gravitational potential energy of the pendulum bob at the three marked locations
Answers
Answer:
Gravitational potential energy is the maximum at point C and lowest at point A
Explanation:
The image for the question is provide in the attached file
The energy of pendulum is governed by mechanical energy. Mechanical energy is the sum of potential energy and kinetic energy
Potential energy increases with increasing height. Thus, when the pendulum bob is at maximum height, then its potential energy is also the highest.
Thus, At point C, the gravitational potential energy is the highest
At point A, the gravitational potential energy is substantial but lower than that of gravitational potential energy at point C
AT point A, gravitational energy is the lowest
How high will the ball go? I would really appreciate a step by step answer!
Answers
Answer:
y = 3.26 [m]
Explanation:
In order to solve this problem, we must use the following equation of kinematics.
\(v_{f}^{2}= v_{o}^{2}-2*g*y\)
where:
Vf = final velocity = 0
Vo = initial velocity = 8 [m/s]
g = gravity acceleration = 9.81 [m/s²]
y = elevation [m]
Note: The negative sign in the equation above represents that the movement is againts the direction of the gravity acceleration.
Now replacing:
\(0=8^{2} -2*9.81*y\\19.62*y=64\\y=3.26 [m]\)
How does Coulomb's law relate to test charges?
You need the test charge so it doesn't affect the answer.
Answers
Coulomb's law is a fundamental principle in electrostatics that describes the interaction between charged objects. This relationship can be described mathematically as: F=k(q1q2)/d^2, where k is a constant of proportionality, q1 and q2 are the magnitudes of the charges, and d is the distance between the charges.
It states that the force between two point charges is proportional to the magnitude of each charge and inversely proportional to the square of the distance between them.
Test charges are used to determine the magnitude and direction of the force acting on a charged object. They are chosen to be small enough that their presence does not significantly alter the original charges, so that Coulomb's law can be accurately applied to the system. By carefully measuring the force acting on the test charges, the magnitude of the original charges can be determined. This is known as the method of test charges and is an important tool in understanding the behavior of charged objects and their interactions with each other.
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Collisions in Two Dimensions: A 1500-kg car traveling at 90 km/h toward the east suddenly collides with a 3000-kg car traveling at 60 km/h toward the south. The two cars stick together after the collision. What is the speed of the cars after collision
Answers
The speed of the cars after the collision is approximately 19.47 m/s.
To determine the speed of the cars after the collision, we need to apply the principle of conservation of momentum.
The momentum of an object is given by the product of its mass and velocity: momentum = mass × velocity.
Given:
Mass of the first car (m₁) = 1500 kg
Velocity of the first car (v₁) = 90 km/h toward the east
Mass of the second car (m₂) = 3000 kg
Velocity of the second car (v₂) = 60 km/h toward the south
To use the principle of conservation of momentum, we need to convert the velocities to a common unit. Let's convert them to m/s.
Converting velocities:
v₁ = 90 km/h = (90 × 1000) / 3600 = 25 m/s (eastward)
v2 = 60 km/h = (60 × 1000) / 3600 = 16.7 m/s (southward)
The total momentum before the collision is equal to the total momentum after the collision, as momentum is conserved.
Total momentum before collision = Total momentum after collision
(m₁ × v₁) + (m₂ × v₂) = Total mass × Final velocity
(1500 kg × 25 m/s) + (3000 kg × 16.7 m/s) = (1500 kg + 3000 kg) × Final velocity
Simplifying the equation:
37500 kg·m/s + 50100 kg·m/s = 4500 kg × Final velocity
87600 kg·m/s = 4500 kg × Final velocity
Dividing both sides by 4500 kg:
Final velocity = 87600 kg·m/s / 4500 kg
Final velocity ≈ 19.47 m/s
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motion of the bones relative to the three cardinal planes resulting from physiological movements is known as
Answers
Motion of the bones relative to the three cardinal planes is known as osteokinematic motion, which is resulting from physiological movement.
Osteokinematics describes clear and smooth movements of those bones which are visible from the outside. They are the gross movement that occurs between two bones. They are generated from the rotation around the joint axis. Movement is generaly rotational around the joints.
There are some examples of Osteokinematics are:
Flexion and extension
Abduction and adduction
Lateral rotation and medial rotation
Osteokinematics are different from arthrokinematics. In general Osteokinematics is the bone movement and Arthrokinematics is the joint movement.
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Radio stations broadcast signals on two different frequency bands. These are called
Answers
Answer:
AM(amplitude modulation) and FM(frequency modulation)
Explanation:
A radio frequency band is a small adjacent section of the radio spectrum frequencies, whereby channels are usually used or set aside to be used.
They are usually of two different bands called AM which is known as amplitude modulation and FM which is known as frequency modulation
Problem 15.09 8.1 moles of an ideal monatomic gas expand adiabatically, performing 8900 J of work in the process. Part A What is the change in temperature of the gas during this expansion?
Answers
The change in temperature of the gas during this expansion is 409.93 K.
Given, Number of moles of an ideal monatomic gas, n = 8.1
Adiabatic work done, W = 8900 J
Adiabatic expansion means q = 0
∴ ∆U = W
First law of thermodynamics is given by, ∆U = q + WAs q
= 0,∆U = W
Therefore, ∆U = (3/2)nR∆T= W
By putting the values, we get; ∆T = (W×2)/(3nR)
= (8900×2)/(3×8.1×8.31)
= 409.93 K
∴ The change in temperature of the gas during this expansion is 409.93 K.The change in temperature of the ideal monatomic gas during the expansion is given by;∆T = (W×2)/(3nR)
where, W = adiabatic work done during expansion n = number of moles of the gas R = gas
constant ∆T = temperature change of the gas.
The adiabatic process involves no exchange of heat between the system and surroundings.
So, in this case, q = 0.
The first law of thermodynamics is given by;∆U = q + W
where ∆U = change in internal energy of the system.
W = work done on the system
q = heat supplied to the system During an adiabatic expansion process, there is no exchange of heat between the system and surroundings.
Hence, q = 0Therefore, ∆U = W
Putting the value of W, we get; ∆U = (3/2)nR∆TAs
∆U = W,
we can say that (3/2)nR∆ T = W
By putting the given values, we get;∆T = (W×2)/(3nR)
= (8900×2)/(3×8.1×8.31)
= 409.93 K
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Astronaut Benny travels to Vega, the fifth brightest star in the night sky, leaving his 36.0 year-old twin sister Jenny behind on Earth. Benny travels with a speed 0.990 c, and Vega is 25.3 light-years from Earth.
a. how much does benny age if he travels to vega with a speed of 0.9996 c ? b. How much time is required for the trip according to Jenny?
Answers
According to Jenny, it would take 128.4 years for Benny to travel to Vega. However, due to time dilation, Benny would experience less time during the trip than Jenny.
a. If Benny travels to Vega with a speed of 0.9996 c, he will experience time dilation according to the theory of relativity. Using the formula for time dilation, we can calculate how much Benny ages during the trip:
t' = t / sqrt(1 - (v^2 / c^2))
Where t is the time according to Jenny (36.0 years) and v is the velocity of Benny's spaceship (0.9996 c).
t' = 36.0 / sqrt(1 - (0.9996^2 / 1^2))
t' = 36.0 / sqrt(1 - 0.9992)
t' = 36.0 / 0.1414
t' = 254.5 years
Therefore, Benny would age 254.5 years if he traveled to Vega at a speed of 0.9996 c.
b. According to Jenny, the distance to Vega is 25.3 light-years. Since Benny is traveling at a speed close to the speed of light, we need to use the formula for time dilation again to calculate how much time is required for the trip:
t = d / v / sqrt(1 - (v^2 / c^2))
Where d is the distance to Vega (25.3 light-years), v is the velocity of Benny's spaceship (0.990 c), and c is the speed of light.
t = 25.3 / (0.990 * 1) / sqrt(1 - (0.990^2 / 1^2))
t = 25.3 / 0.990 / sqrt(1 - 0.9801)
t = 25.3 / 0.990 / 0.196
t = 128.4 years
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why are computer simulations useful in studying phenomena in the universe?
Answers
Computer simulation is useful because it helps in the prediction of what will likely happen in the future using data from past events.
What is computer simulation?This is the use of computer models to represents a hypothetical scenarios that are likely to be obtained in the real world.Computer simulations are useful in studying phenomena in the universe because they help us to achieve the followings;
It helps in the prediction of what will likely happen in the future using data from past events.It saves cost and time of carrying out actual experiments.It can help prevent a disaster that may occur in the future.Learn more about computer simulations here: https://brainly.com/question/22214039
Which description best matches the image below of a hand that is using the right hand palm rule?
Answers
The right hand palm rule is that a proton moving down in the magnetic field points away from you and will experience a towards the left . Option A
What is the Flemings right hand rule?The Flemings left and right hand rule from the foundation of electromagnetism. Recall that electromagnetism has to do with the production of current by the relative motion between a charge and a magnetic field.
According to the Flemings right hand rule, when the thumb, the fore finger and the middle finger are mutually perpendicular to each other, then the then the thumb points towards the direction of the magnetic force, the forefinger points towards the magnetic field and the middle finger points in the direction of the current.
As such, the description that matches the image below of a hand that is using the right hand palm rule is that a proton moving down in the magnetic field points away from you and will experience a towards the left . Option A
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An object is in motion if ___
Answers
Answer:
An object is in notion if its position change with time.
Which resource is a nonrenewable resource?
fresh water
maple trees
solar energy
precious metal
Answers
Answer:
maple tree
Explanation:
if the last one dies it is extinct so it is maple tress
Maple trees resource is a nonrenewable resource. Hence option B is correct.
What is maple tree ?Acer is a genus of trees and plants that are generally referred to as maples. The genus is classified as Sapindaceae. There are about 132 species, the most of which are endemic to Asia, with a few being found in Europe, northern Africa, and North America. Acer laurinum is the only species that grows in the Southern Hemisphere. The genus' type species is the sycamore maple, Acer pseudoplatanus, which is the most abundant maple species in Europe. Maples are distinguished by their palmate leaves and characteristic winged fruits. Horse chestnuts are the maples' closest cousins. Some maple species' sap is used to make maple syrup. It is one of the most abundant tree genera in Asia.
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WHOEVER RESPONDS TO THIS FIRST WILL GET BRAINIEST!!!!!!
What is the velocity of a car going 4miles in 30 seconds, with the displacement of 36?
Answers
Answer:
alright i responded
Explanation:
you didnt say i had to answer
Please answer all of these questions and you will get the brain list
Answers
Answer:
1=900j
2=140j
3=5m
Explanation:
1,
work=force×displacement
w=450×2
w=900j
2,
w=f×s
w=70×2
w=140j
3,
w=f×s
200=40×s
200/40=s
s=5m
Which object will accelerate less if the
same force is applied to both--an
apple or a couch? Why
Answers
If we apply same force to both-an apple or a couch, the object which will accelerate less is couch.
What is acceleration?
Acceleration is the term used to describe the pace at which speed and direction of velocity vary over time. Something is said to be accelerating when it starts to move faster or slower. Even when the speed is constant, motion on a circle accelerates because the direction is always keeps shifting. Both impacts cause all other motions to speed up.
The couch will accelerate less because
F = m a
where, F = force, m = mass, a = acceleration.
This equation can also be written as
a = F/m
It tells us that the acceleration is inversely proportional to mass.
so, in the question given the mass of couch will greater as compared to an apple so the acceleration of the couch will be lesser as compared to apple.
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A car traveling at 100km/hr .how many hours will it take to cover a distance of 750 km
Answers
Answer:
7.5 right?
Explanation: if im wrong shoot me
Answer:
7.5 hours( 7 hours 30 minutes)
Explanation:
Speed = distance/time
time = distance/speed
750 km divided by 100 km/hr = 7.5 hours
Newton's first law states that an object at rest will remain at rest unless an unbalanced force acts on it. So let's imagine your car breaks down in an intersection and you want to get it off the street. You represent a net unbalanced force, so you start pushing your car but you can't get it to move. Why is it so hard to start your car moving
Answers
It is so hard to start your car moving because of inertia, which is the tendency of a body to maintain its state of rest or uniform motion in a straight line unless acted upon by an external force.
Therefore, the vehicle will require an unbalanced force to start moving. When a car is in motion, it tends to remain in motion with the same speed and direction in the absence of external forces.
The first law of motion, also known as the law of inertia, states that an object at rest will remain at rest unless acted upon by an external force. The inertia of the object is a measure of its resistance to changes in its motion. Thus, when you start pushing the car, the initial force you apply is not enough to overcome the inertia of the car, which tends to remain at rest. To start the motion of the car, you need to exert a force that is greater than the inertia of the car. This means that you need to apply more force than what is required to maintain the motion of the car at a constant speed.
Starting a car from rest requires an unbalanced force that is greater than the inertia of the car. Newton's first law of motion explains that an object at rest will remain at rest unless acted upon by an external force. Therefore, when a car is stationary, it tends to remain at rest due to its inertia, and it requires a net force to start moving.
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what is the condition for the first dark fringe through a single slit of width w?
Answers
The condition for the first dark fringe through a single slit of width w is when the path difference between the rays passing through the top and bottom edges of the slit is half a wavelength, which causes destructive interference and results in a dark band on the screen.
This can be expressed mathematically as sin θ = λ/w, where θ is the angle between the direction of the incoming light and the direction of the diffracted light, λ is the wavelength of the light, and w is the width of the slit.
The condition for the first dark fringe in a single-slit diffraction pattern occurs when the path difference between adjacent rays is equal to half the wavelength (λ/2). This can be represented by the equation:
sin(θ) = λ/(2w)
where θ is the angle of the first dark fringe, λ is the wavelength of the light, and w is the width of the slit.
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a beam of electrons (which have negative charge q) is coming straight toward you. you put the north pole of a magnet directly above the beam. the magnetic field from the magnet points straight down. which way will the electron beam deflect?
Answers
The electron beam will deflect to the right.
Explanation:
When a charged particle such as an electron moves through a magnetic field, it experiences a force perpendicular to both the direction of motion and the direction of the magnetic field. In this case, the beam of electrons is moving straight towards us, and the magnetic field points straight down, so the force on the electrons is to the right.
This is known as the right-hand rule, where the thumb points in the direction of motion of the charged particle, the fingers point in the direction of the magnetic field, and the direction the palm faces gives the direction of the force on the particle. Therefore, the electron beam will deflect to the right.
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Explain briefly each step of the chain that leads back to solar energy. You may choose one of the sources used for producing electricity or to power transportation; however, in each case, trace the path back to the sun.
Answers
The chain that leads back to solar energy involves the conversion of sunlight into a usable form of energy, which is then harnessed for electricity generation or transportation. This process begins with solar radiation reaching Earth's surface and being captured by solar panels or absorbed by plants through photosynthesis. The energy is then transformed into electrical energy or stored in biomass and fossil fuels, which can be used as fuel for power plants or vehicles.
The chain starts with solar radiation, which is the energy emitted by the Sun in the form of electromagnetic waves. This radiation reaches Earth's surface and can be captured through solar panels, which convert sunlight directly into electricity using photovoltaic cells. Alternatively, solar energy is absorbed by plants during photosynthesis. Plants convert solar energy into chemical energy, which is stored in the form of biomass. Over millions of years, biomass can be transformed into fossil fuels such as coal, oil, and natural gas through geological processes.
In the case of electricity production, solar panels generate direct current (DC) electricity, which is then converted into alternating current (AC) electricity through inverters. This AC electricity can be used to power homes, businesses, and industries, providing a renewable and sustainable energy source.
For transportation, solar energy can be indirectly utilized through biofuels. Biofuels are derived from biomass, such as plant matter or animal waste, which has stored solar energy through photosynthesis. Biofuels can be processed to produce fuels like ethanol or biodiesel, which can be used in vehicles. When biofuels are burned, the stored solar energy is released as heat, which is then converted into mechanical energy to power the vehicle's engine.
In both cases, whether for electricity generation or transportation, the ultimate source of energy can be traced back to the Sun, which provides the initial input of solar radiation. The energy from the Sun is captured and transformed through various processes to create usable forms of energy that power our daily lives.
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Brainliest if right
Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who has a mass of 40 kg, is traveling in the opposite direction at 5 m/s. They crash into each other and hold onto each other so that they move as one mass. How fast are they traveling?
Answers
Jupiter has a gravitational field of 23.6 N/kg. Would you weigh more or less on Jupiter than you do on Earth?
Answers
Earth's gravitational field = 10N/kg
Jupiter's gravitational field = 23.6 N/kg
Jupiter's gravitational field > Earth's gravitational field
Therefore, we will weigh more on Jupiter.
The gravitational force exerted on a mass—typically located close to a planet's surface—is what gives something its weight. A different planet with a weaker gravitational field can cause an object's weight to varying. The gravitational field strength is expressed in Newtons per kilogram and increases with the size of the subject.What is Gravitational Field?In physics, a gravitational field is a model used to explain the effects that a large body stretches into the space surrounding it, creating a force on a smaller, more massive body. As a result, the newtons per kilogram (N/kg) gravitational field, which is utilized to explain gravitational phenomena, is used. In meters per second square (m/s2), it is equivalently expressed.The concept of gravity originally described a force between point masses. Since the 19th century, explanations of gravity have typically been taught in terms of a field model, rather than a point attraction. Pierre-Simon Laplace attempted to characterize gravity as some sort of radiation field or fluid, following Isaac Newton. Instead of two particles being attracted to one another in a field model, the particles deform spacetime due to their mass, and this distortion is what is sensed and quantified as a "force." According to such a hypothesis, gravity either doesn't exist or is a made-up force that causes stuff to move in specific ways in reaction to the curvature of spacetime.To learn more about Gravitational Field, refer to:
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One third of a certain distance covered with a speed of 30 km/h and the remaining distance was covered in two halves with a speed of 60 km/h and 90 km/h respectively, find the average speed of the entire trip.
Answers
Average speed = d / (d/30 + x/60 + (2/3 - x)/90)
The above formula gives the average speed of the entire trip.
Let the distance be d km. As per the given question, One-third of the distance is covered at a speed of 30 km/h. Rest of the distance, i.e., two-thirds of the distance is covered in two halves with a speed of 60 km/h and 90 km/h respectively.
Distance covered in the first part = (1/3)d km
Time taken = d / 30 hours
Distance covered in the second part = (2/3)d km
Let us assume that in the second part, the distance covered at 60 km/h is x km. So the distance covered at 90 km/h will be (2/3 - x) km.
Time taken by the car to cover the distance x at 60 km/h is x / 60
Time taken to cover the distance (2/3 - x) km at 90 km/h is (2/3 - x) / 90
Total time taken to cover the distance = d/30 + x/60 + (2/3 - x)/90
For the entire trip, the average speed can be calculated as follows:
Average speed = Total distance / Total time
Let's find the total distance first:
Total distance = d km
Total time = d/30 + x/60 + (2/3 - x)/90
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consider research that you have heard in class or in the media. how did a visual presentation of the data help you understand the information that was presented?
Answers
The visual presentation of the data helps us to understand the information better, because: it provides clearer data which easier for us to identify patterns, trends, and outliers, especially in super large data.
How does the visual presentation advantages?In presenting data from experiments, it is strongly recommended to use visual presentation, such as graphics, diagrams, pictures, etc. The advantages of using visual presentations are as follows:
It maintains more attention from the readers.It is able to present very large data in just one picture.The meaning of the graph or diagrams is easier to comprehend.Learn more about visual presentation here https://brainly.com/question/29426867
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If you traveled 20 meters in 4 seconds, what was your average velocity?
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Answer:
Explanation:
the average speed of the object is 6.67 m/s