In a football match a ball is kicked by a player with a force of 25 N for 0.2 s and then by another player with a force of 70 N for 0.1 s in the same direction. If the ball gains a velocity of 24 m/s after two kicks, the mass of ball is

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5 kg

10 kg

2.5 kg

0.5 kg

answer is D.

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Detailed Solution

mV=F1t1+F2t2m×24=25×0.2+70×0.1m×24=12m=0.5kg

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