derive first law of newton from second law
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Second Law: The body moves (accelerates) when a force is applied to it that is
F = ma --> a = F / m
When there is no force acting on the body (F = 0), then the body won't move or would remain in motion with constant velocity (won't accelerate in both cases: a = 0), why? Because
a = F / m and F =0 --> a = 0
So we can state the first law: A body will remain at rest or constant velocity unless a force in acted upon it.
F = ma --> a = F / m
When there is no force acting on the body (F = 0), then the body won't move or would remain in motion with constant velocity (won't accelerate in both cases: a = 0), why? Because
a = F / m and F =0 --> a = 0
So we can state the first law: A body will remain at rest or constant velocity unless a force in acted upon it.
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