ACTIVITY 3 Take a ping-pong ball. Release it from a height on a hard, smooth floor. You will observe that the ball after striking the floor bounces several times. Try to answer the following questions : (a) What is the potential energy and kinetic energy when you release the ball ? (b) Why does the ball bounce back after striking the floor ? KE (c) From where does the ball get the kinetic energy for motion after striking the floor ? PE (d) What happens to the energy of the ball when the ball stops bouncing ?
Answers
1. When we release the ball the potential Energy before releasing will slowly convert to kinetic energy and it will decrease and Kinetic energy will increase.
2. When the ball hits the floor and stops, that energy has to go somewhere. The energy goes into deforming the ball--from its original round shape to a squashed shape.
3. collision force gets converted to kinetic energy
4. A ball stops bouncing because it has lost all its energy. ... Upon hitting the ground, some kinetic energy is lost, because it is converted to other forms of energy, mostly in the form of thermal energy (from friction and heat released) and even possibly sound energy
Hope it helps :)
Answer:
Ans
Explanation:
a) The potential energy (that was possessed due to height) will slowly be converted into kinetic energy due to the motion. So when we release the ball PE will be 0 and KE will be maximum
b) Because of the max kinetic energy possessed by the ball has to be used somewhere.
c)PE possessed by the ball got converted into kinetic energy
d) the energy agains get converted into PE due to state of rest( if there is no friction)