Eduprobe
Question:
A man (mass = 50 kg) and his son (mass = 20 kg) are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of 0.70ms⁻¹ with respect to the man. The speed of the man with respect to the surface is :
0.14ms⁻¹
0.20ms⁻¹
0.47ms⁻¹
0.28ms⁻¹
Solution:
Correct option is A.
0.20ms⁻¹
→0=50V₁-20V₂
0 and V₁+V₂=0.7
→V₁=0.2