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

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average force acting on the particle is 25N

average force acting on the particle is 30N

change in momentum of the particle is 20N-s

change in momentum of the particle is 40N-s

answer is C.

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Detailed Solution

change in momentum = Area under F-t graph = $\frac{1}{2} x 0.4 x 100 N - s = 20 N - s$

Average force = $\frac{change in momentum}{Time interval} = \frac{20}{0.4} N = 50 N$

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