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State Newton's second law of motion. Wri...

State Newton's second law of motion. Write its mathematical expression. Explain how can we obtain first law from it.

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The mathematical expression of the second law of motion is F=ma.
Explanation : Obtaining first law of motion : F = ma or `F=(mi(v-u))/(t)`
`therefore` =mv-mu This means that the body will continue moving with uniform velocity, u throughout the time t. If u is zero then u will also be zero. It means the body will remain at rest.Thus, Newton.s first law of motion can be obtained from the force equation.
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