A player stop a football weighing 0.5kg which comes flying towards him a velocity of 10m/s.if the impact last for 1/50sec.and the ball bounce back with a velocity of 15m/s,then the average force involved is
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The answer is :-625 N
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Explanation:
Given mass of football is =0.5 kg
initial velocity is = 10m/s
final velocity is =15 m/s
Given time is= 0.02 s
average force=?
Momentum (P)= mv
=0.5*( -15-10 )
= -12.5kgm/ Avg Force = P/T
=12.5/0.02= 625N
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