A car at a speed 7 m/sec can be stopped by applying brakes in a short distance of 10 m show that the total frictional force opposing the motion, when brakes are applied, is 1/4 of the weight of car
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U= initial velocity
V= final velocity
V^2=U^2+2as
M=mass
V= final velocity
V^2=U^2+2as
M=mass
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