Q.

The figure shows the position-time (x-t) graph of one-dimensional motion of a body of mass 0.4 kg. The magnitude of each impulse is
 

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a

0.8 N-s

b

0.2 N-s

c

1.6 N-s

d

0.4 N-s 

answer is B.

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Detailed Solution

ΔP=2mu2×0.4×22=0.8NS =2mxt

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