A person manages to push a car of mass `800 kg` with a uniform velocit – InterviewSolution

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1.	A person manages to push a car of mass `800 kg` with a uniform velocity along a level road. When another person joins him and pushes the car with an equal force, the acceleration produced is `0.5m//s^(2)`. Calculate the force with which each person pushes the car.
Answer» Let `F` be the force applied by each person. In the first case, when velocity is uniform, F=f=force of friction. In the second case, applied force `= F+F= 2F` Net force producing acceleration `= 2F-f = 2F-F= m a = 800xx0.5= 400N`

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