Question

body will be in uniform motion when..

1: Acceleration changes

2 :There is no change in acceleration

3: An unbalanced force acting on it

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Answer 1

According to law of inertia or Newton's first law of motion, a body in state of rest or of uniform motion remains in state of rest or of uniform motion unless it is acted upon by an external force. Hence a body in uniform motion required no force to keep them in uniform motion.

Given that force = mass x acceleration

Constant speed means there is no acceleration, therefore if acceleration = 0