Question

Amotorvehicle of mass 1200kg is travelling along alevel road at 54km/hr.The breaks are then applied and the speed of the vehicle reduced to 18km/hr over adistance of 50M .if the afriction motion resistant is constant at 160N .calculate the effective braking force of the brakes. SLN.Mass =1200kg vel=54km/hr*1000 divide by 3600=15m/s speed of vehicle=5m/s distance=50m 10*1600*50=800000joules
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