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Tuesday, 2 April 2013

Q.No.3.9: - Define impulse and show that how it is related to linear momentum?

Q.No.3.9: - Define impulse and show that how it is related to linear momentum?
Ans: - Impulse: -  If a very large force exert for a very short interval of time then product of such force and time is called impulse.
     Mathematically

Relation between impulse and linear momentum: -  
            According to Newton’s second law of motion, the force is defined as the rate of change of momentum.
          Thus if force F acting on a body for time ∆t, changes its momentum from mvf to mvi. Then the force is written as;

Hence, impulse is equal to the change of linear momentum.

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