Question

a boy of mass 40 kg stands in a

Answer 1

Answer:

floor

Explanation:

It's the good place to stand.

Answer 2

Explanation:

A boy of mass 40 kg stands on a rail road car of mass 60 kg, moving with velocity 10 m//s. Now , the boy begins to run with velocity 5 m//s , with respect to the car , in the same direction , the velocity of the car will be