Question

In a two body system, if both the bodies are in motion, then
a) CM must be in motion b) C.M must be accelerated
c) C.M may be at rest d) All the above

Answer 1

Answer:

c is the ANSWER

Explanation:

SOLUTION

Newton's First law of motion - "Every body continues to be in its state of rest or of uniform motion in a straight line unless compelled by some external force to act otherwise". 

According to Newton's First law of motion, statement is true, an external force has to be applied in a direction normal to the direction of motion to change its direction of motion