A freely falling body eventually stops on reaching the ground. What happens to its kinetic energy?

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It gets converted into sound energy

It gets converted into heat energy

It is used to change the shape or deform the body

All of these

answer is D.

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Detailed Solution

The kinetic energy of the freely falling body gets converted into the sound energy and heat energy and sometimes is used in deforming and changing the shape of a body like a ball of clay.
●       The amount of kinetic energy an object has depends on both its mass and the speed at which it is moving.
●       When an object falls from a certain height, its potential energy decreases but its kinetic energy increases.
●       All of the object's potential energy is transformed into kinetic energy when it touches the ground.
●       The sound that is produced when the object hits the ground is a result of the conversion of the kinetic energy of the object into sound energy.
●       The object heated up when hits the ground due to the conversion of kinetic energy into heat energy.

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