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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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
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