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Standard XII

Physics

Conservation of Momentum

A ball of mas...

Question

A ball of mass $1600 g$ traveling with a velocity of $25 m / s$ is stuck by stick. The ball returns with the speed of $30 m / s$ . What is the impulse of the blow?

95 N - s

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88 N - s

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53 N - s

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74 N - s

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Solution

The correct option is B $88 N - s$
Taking the direction of final velocity to be positive direction:
$\to J = Δ \to p = m (\to v - \to u)$

$J$ =1.6{(30)-(-25)} = 88 ~N-s

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A ball of mass 1600 g traveling with a velocity of 25 m/s is stuck by stick. The ball returns with the speed of 30 m/s. What is the impulse of the blow?

The correct option is B 88 N−sTaking the direction of final velocity to be positive direction: →J=Δ→p=m(→v−→u) J=1.6{(30)-(-25)} = 88 ~N-s

A ball of mass $1600 g$ traveling with a velocity of $25 m / s$ is stuck by stick. The ball returns with the speed of $30 m / s$ . What is the impulse of the blow?

The correct option is B $88 N - s$
Taking the direction of final velocity to be positive direction:
$\to J = Δ \to p = m (\to v - \to u)$

$J$ =1.6{(30)-(-25)} = 88 ~N-s