Question

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 5ms , his kinetic energy is 100% more than that of
the boy. The initial velocity of the man is,
A) (√2+1)m/s B) 5m/s C) 2(V2-1 m/s D) 2m/s​

Answer 1

Answer:

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