Answer to Question #33209 in Mechanics | Relativity for donepudi rohit sai

Question

if no force acting acting on a body,it

Answer 1

Recall Newton's first law of motion which states: when viewed in an inertial reference frame, an object either is at rest or moves at a constant velocity, unless acted upon by a force. So, if no force acts on a body, it'll be at rest or move with constant velocity.