# For how long should a force of 100 N act on a body of mass 20kg so that it aquires a velocity of 100m//s?

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For how long should a force of 100 N act on a body of mass 20kg so that it aquires a velocity of 100m//s?

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Here, F=100N, m=20kg, u=0, v=100m//s
a=F/m=(100)/20= 5m//s^(2), t=?
v=u+at, 100=0+5t or t=(100)/5= 20s