A vehicle of mass 20kg is moving with a velocity of 4mps . find the magnitude of the force that is to be applied on the vehicle so that the vehicle have a velocity of 1mps after travelling a distance of 20m .
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v2=u2+2as
1=4^2+2a×20
a=-3/8
F=ma
F=20×-3/8
=-7.5
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