A car of mass 800 kg is traveling with a velocity of 20 m/s when brakes are applied to stop after travelling a distance of 8 metres find retardation and retarding force
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time taken to travel 8m is t=x/v
t=8/20 =0.4 sec
acceleration to stop the car v^2=u^2 =2as
v=0 0=20×20+2a×8 from here a =25 m/s
F=ma =800×25=20,000N
t=8/20 =0.4 sec
acceleration to stop the car v^2=u^2 =2as
v=0 0=20×20+2a×8 from here a =25 m/s
F=ma =800×25=20,000N
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