A) 0.5 sec
B) 0.2 sec
C) 0.4 sec
D) 0.25 sec
Correct Answer: A
Solution :
Change in momentum = Impulse Þ \[\Delta p=F\times \Delta t\Rightarrow \Delta t=\frac{\Delta p}{F}=\frac{125}{250}=0.5\ \sec \]
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