a motor car is moving with velocity of 108km/h it take 4 second to stop after the brake applied calculate the force exerted by the brakes on a motor car if it's mass along with the passenger is 100 kg?
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first we have to convert km/h into m/s 108×5/18=30
now,f=ma
now a=velocity/time
30/4=7.5=a
now f=ma
100×7.5=750N
now,f=ma
now a=velocity/time
30/4=7.5=a
now f=ma
100×7.5=750N
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