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A man who is running has half the kineti...

A man who is running has half the kinetic energy of a boy of half his mass. The man speeds up by 1 `ms^(-1)` and then has the same kinetic energy as the boy. The original speed of the boy was:

A

`sqrt(2)ms^(-1)`

B

`2(sqrt(2)+1)ms^(-1)`

C

`2 ms^(-1)`

D

`sqrt(2)+1ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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