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A rock of mass m is dropped to the groun...

A rock of mass m is dropped to the ground from a height h. A second from the same height. When second rock strikes the ground, what is its kinetic energy ?

A

Twice that of the first rock

B

Four times that of the first rock

C

The same as that of the first rock

D

Half that of the first rock

Text Solution

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The correct Answer is:
A
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