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Impulsive Forces in Collision

A ball of mas...

Question

A ball of mass $50 g$ strikes on the wall with speed $50 m s^{- 1}$ perpendicular o wall and rebounds with same speed. Impulse imparted to the wall during by the impact is

A

5 N s

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B

10 N s

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C

2.5 N s

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D

1.25 N s

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Solution

The correct option is C $5 N s$
We know that
Impulse= $F Δ t = m (v_{f} - v_{i}) = 0.05 \times (50 - (- 50)) = 5 N s$

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