. A boy of mass 40 kg rides a cycle of mass 60 kg on a road with a velocity of 20 m/s. Suddenly he observed a biker crossing the road at a distance of 10m. If the boy applies the breaks then what should be the magnitude of breaking force to avoid accident(AS7)?
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x=0
a body of mass 40 kg moving initially with a constant speed of 10ms^-1 to the north is the
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