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State and explain Newton's II law of mot...

State and explain Newton's `II` law of motion .

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Statement : The time rate of change in the linear momentum is directly proportional to the force impressed on a body and takes place in the direction of force applied. Explanation : From Newton's `II` law of motion, `(vecp_(f)-vecp_(i))/("time interval")prop vecF` i.e. `vecF=K(dvecp)/(dt)` where `K` is a constant.
Since `K` is positive, the direction of `vecF` and `dvecp` is the same. `:.` the change in the direction of linear momentum takes place in the direction of the force.
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