(C) Impulse $J$ is defined as the product of the average force $F$ and the time interval $\Delta t$ for which the force acts: $J = F \cdot \Delta t$.I

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(C) Impulse $J$ is defined as the product of the average force $F$ and the time interval $\Delta t$ for which the force acts: $J = F \cdot \Delta t$.In the first case,the impulse is $J = F \cdot \Delta t$.In the second case,the force $F$ remains the same,but the contact time is doubled,i.e.,$\Delta t' = 2 \Delta t$.Therefore,the new impulse $J'$ is given by $J' = F \cdot (2 \Delta t) = 2(F \cdot \Delta t) = 2J$.Thus,the new impulse is twice the original impulse.

Class 11 Physics Laws of Motion Third Law of Motion and Momentum and Impulse

Medium

$A$ boy hits a baseball with a bat and imparts an impulse $J$ to the ball. The boy hits the ball again with the same force,except that the ball and the bat are in contact for twice the amount of time as in the first hit. The new impulse equals:

A
half the original impulse
B
the original impulse
C
twice the original impulse
D
four times the original impulse

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Laws of Motion

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Third Law of Motion and Momentum and Impulse

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$A$ boy hits a baseball with a bat and imparts an impulse $J$ to the ball. The boy hits the ball again with the same force,except that the ball and the bat are in contact for twice the amount of time as in the first hit. The new impulse equals:

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