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

The kinetic energy of a man is half that of a boy whose mass is half t

1.	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
Answer» `SQRT(2)+1`m/s 5m/s `2(sqrt(2)-1)` m/s 2m/s Answer :B