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Tuesday, 2 April 2013

Q.No.3.8: - Find the change in momentum for an object subjected, to a given force for a given time and state lawof motion in terms of momentum.

Q.No.3.8: - Find the change in momentum for an object subjected, to a given force for a given time and state lawof motion in terms of momentum.
Ans: - Consider a body of mass “m” moving with an initial velocity vi. Let us suppose that an external force F acts upon it for time “t” after which velocity becomes vf. If this force produces an acceleration a, then it is expressed as,

This is Newton’s 2nd law in terms of momentum.

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