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A man running has half the kinetic energ...

A man running has half the kinetic energy of a boy of half his mass. The man speeds up by `1 ms^(-1)` and then has KE as that of the boy. What was the original speed of man? 

A

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

B

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

C

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

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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