A running man has half the kinetic energy than a boy of half his mass has. The man speeds up by 
and then he has the same energy as the boy. The original speeds of the man and boy respectively are:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
: As the kinetic energy of the man is half the kinetic energy of the boy
Or 
Here, M and V for man and m and v for boy.
Now when the velocity of the man is increased to (V+1) then kinetic energies become equal
Or 
And 
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