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The velocity of a body of mass 10 kg increases from 4 m/s to 8 m/s when a force acts on it for 2 s <br> (a) What is the momentum before the force acts? <br> (b) What is the momentum after the force acts ? <br> (c ) What is the gain in momentum per second ? <br> (d) what is the value of the force ?

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Answer Text

Answer :
(a) 40 kg.m/s (b) 80 kg.m/s (c) 20 kg.m/`s^(2)` (d) 20 N

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