How many times the kinetic energy of a golf cart?
Two identical golf carts move at different speeds. The faster cart has twice the speed and therefore has four times the kinetic energy. sixteen times as far. A light aluminum ball and a heavy lead ball of the same size roll down an incline.
What happens to the potential energy when a ball is pushed?
The extra energy from the push is converted into kinetic energy, which is then converted into more potential energy at the end of the motion than the ball had when it was released. by a factor of four.
Which has the greater speed the ball or the mass?
If KEs are the same but masses differ, then the ball with smaller mass has the greater speed. Two people who weigh the same climb a flight of stairs. The first person climbs the stairs in 30 s, and the second person climbs them in 40 s. Which person does more work?
Which has the greater speed with the same Ke?
Explain in terms of the definition of KE. Similarly, in a gaseous mixture of heavy molecules and light molecules with the same average KE, can you say which have the greater speed? If KEs are the same but masses differ, then the ball with smaller mass has the greater speed.
What is the kinetic energy of a golf ball?
2:364:41Science of Golf: Potential and Kinetic Energy - YouTubeYouTubeStart of suggested clipEnd of suggested clipEnergy of the club head is converted into elastic energy both the club and the ball snap backMoreEnergy of the club head is converted into elastic energy both the club and the ball snap back pushing the ball forward with kinetic energy in the form of motion as well as thermal.
How much kinetic energy does a ping-pong ball have?
about 0.1JThe kinetic energy of the 2g Ping-Pong ball, traveling at 10m/s, is about 0.1J, while the 5kg bowling ball has acquired a kinetic energy of 1.6x10−4J - nearly 1000 times less.
What is the potential energy and kinetic energy when you release the ping-pong ball?
(a) What is the potential energy and kinetic energy. when you release the ball ? PE-ESK. EO.
Why does the force of gravity do work on a car that rolls down a hill but no work when it rolls along a level part of the road?
Gravity does no work on a car rolling on a level part of a road because the component of the force of gravity is zero in the horizontal direction.
What happens to the ping pong balls when the energy increases?
The ball bounces off it that bit harder, gaining twice that extra velocity relative to the floor. Repeat for several bounces and the difference might become noticeable. This is one real part. The other arises because the ball slows as it rises and accelerates again as it falls.
Why does a ping pong ball bounce higher than a tennis ball?
The reason is that the 'soft' surface gives a little and absorbs some of the energy of the ball. (In technical terms it is called an 'inelastic collision'.) Having less energy, the ball doesn't bounce as high. That answer works well for a nice bouncy tennis ball.
What is the relationship of kinetic energy and potential energy as the ball falls?
As the ball falls towards the ground, its gravitational potential energy is transformed into kinetic energy. The kinetic energy of the ball will continue increasing as the ball gains momentum, until it finally collides with a surface. When the ball collides, the kinetic energy is transformed into other forms of energy.
At which point does the ball has greatest kinetic energy?
When the ball start falling it changes potential energy to kinetic. The velocity is getting higher as the ball falls. Therefore the greatest kinetic energy is at point E. 39.
What do you observe in the kinetic and potential energy of a ball at the top of the building?
A boy is holding a ball on top of a building of height. At this point, the ball possess gravitational potential energy and no kinetic energy as it is stationary. He drops the ball down the building. During the duration of the fall, the ball's gravitational potential energy is converted to kinetic energy.
In which case is gravity not doing work?
The work done by gravity on a falling object depends only on the total change in height, given by the formula W=mgh. If an object is not falling (its height doesn't change), gravity does not do any work on it.
Is work done by gravity always zero?
No, because the angle between the gravity and the displacement is 90 degrees, we can now say gravity has no effect in this direction like we saw earlier. So gravity's not causing this displacement at all, and therefore we can say the work done by gravity is zero, because gravity's not the one that displaced this body.
Is work done by gravity always negative?
If the object goes up (the height increases so Δh is positive) then the work done by gravity is negative and tries to make the object's KE decrease. If the object goes down (the height decreases so Δh is negative), the work done by gravity is positive so it tries to make the object's KE increase.
What force causes an object to roll down a hill?
A: Gravity tries to pull things to the center of the earth. The ground, however, usually gets in the way (good thing too). If the ground is sloped, like on the sides of a hill, the object being pulled at by gravity (a ball for example) can get closer to the center of the earth by rolling to the bottom of the hill.
Why does a car not roll down a hill?
After you park on a slope facing uphill, turn the wheels away from the sidewalk or shoulder. This will rotate your tires, so if your gears disengage, or the emergency brake fails, the car will simply hit the curb instead of rolling down the hill.
What force makes the car go down the hill?
For example, the force of gravity can affect the motion of your car on a hill. If you're going downhill, a portion of gravity tends to speed you up. If you're going uphill, a portion of gravity tends to slow you down.
What forces cause the object to roll down the incline?
Rolling along an incline is an accelerated rolling due to the force of gravity acting through center of mass. An incline is an ideal arrangement to realize accelerated rolling motion. Force due to gravity acts through the center of mass of the rolling body.
Answer
Think about it like this, the more mass there is, the faster its going to go. If you took a golf ball and a ping pong ball and you held them each separately, you would notice that the golf ball is heavier. If they move with the same kinetic energy, but the golf ball WEIGHS more, then the golf ball will have the greater speed.
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