Prove that Newton's first law is special case of Newton's second law
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Newton's second law states that the rate of change of momentum of a body is equal to the resultant force on the body and is in the same direction as the resultant force. ... newton's first law of motion states that an object in motion stays in motion unless acted upon by an outside force.
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Newton second law states that the rate of change of momentum is directly proportional to netforce acting on a body.
so, Fnet=m(v-u)/t
F=ma
by this we can say the body is same state until external force acts on it so body is in state until net force (Fnet) act on itAnswer:
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