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Sagot :
Potential energy , Kinetic energy
What is kinetic energy and potential energy?
Kinetic energy is a form of energy that posses by an object due to its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
Potential energy is the energy held by an object due to its position relative to other objects, stresses within itself, its electric charge, or other factors.
According to given condition,
At first,
When a ball is at the top of a hill , it posses a potential energy because the ball is at some height from the surface where the energy held by ball is due to its position.
That is why, a ball at the top of a hill is an example of Potential energy.
Secondly,
When a ball is rolling down the hill , it posses kinetic energy because the ball have some energy that posses by an object due to its motion.
That is why, a ball rolling down the hill is an example of Kinetic energy.
Learn more about Potential energy and Kinetic energy here:
https://brainly.com/question/11749818
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