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Q.

The figure shows the force versus time graph for a particle. Then

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a

change in momentum of the particle is 40N-s

b

average force acting on the particle is 30N

c

change in momentum of the particle is 20N-s

d

average force acting on the particle is 25N

answer is C.

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Detailed Solution

change in momentum = Area under F-t graph = 12 x 0.4 x 100 N-s=20 N-sAverage force = change in momentumTime interval=200.4N=50 N
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The figure shows the force versus time graph for a particle. Then