A man of mass 60 kg and a boy of mass 30 kg are standing together on a frictionless ice surface. If they push each other apart, the man moves away with a speed of 0.4m/s relative to ice. After 5s they will be away from each other at a distance of ___________
(a) 9 m
(b) 3 m
(c) 6 m
(d) 30 m
I have been asked this question in examination.
The question is from Laws of Nature topic in portion Laws of Motion of Engineering Physics I