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A man standing on the edge of the roof o...

A man standing on the edge of the roof of a `20 m` tall building projects a ball of mass `100 gm` vertically up with a speed of `10 ms^(-1)`. The kinetic energy of the ball when it reaches the ground will be `[g = 10 ms^(-2)]`

A

`5 J`

B

`20 J`

C

`25 J`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
C
`K.E_(f) = K.E_(i) + P.E_(i)`
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