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The kinetic energy of a man is half that...

The kinetic energy of a man is half that of a boy whose mass is half that of the man. When the man speeds up by `5m^(-1)`, his kinetic energy is 100% more than that of the boy. The initial velocity of the man is

A

`sqrt(2)+1`m/s

B

5m/s

C

`2(sqrt(2)-1)` m/s

D

2m/s

Text Solution

Verified by Experts

The correct Answer is:
B
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