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If Ki and Kf are the initial and final v...

If `K_i` and `K_f` are the initial and final values of kinetic energy of a body respectively, then the work done by the net force on the body is equal to 

A

`(K_f K_i)/(K_f - K_i)`

B

`K_f + K_i`

C

`(K_f + K_i)/2`

D

`K_f - K_i`

Text Solution

Verified by Experts

The correct Answer is:
D
According to work energy theorem
`W = K_f - K_i`.
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