An object is falling from a terrace height 20 m - At what point does it have the maximum kinetic energy-A- 20 m heightB- 10 m heightC- When object touched the ground floorD- Just before touching the ground floor

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Kinetic Energy

An object is ...

Question

An object is falling from a terrace (height 20m). At what point does it have the maximum kinetic energy?

20m height

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10m height

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When object touched the ground floor

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Just before touching the ground floor

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Solution

The correct option is D
Just before touching the ground floor

Since the velocity of the object increases when it comes down, its kinetic energy will be maximum just before touching the ground. When object touches the ground, part of kinetic energy is transformed into sound energy and part of energy is lost to the surroundings.

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