Question

An object of mass 5kg is moving with a velocity of 10ms.A force is appplied to that in 20sec it attains a velocity of 25ms.what is the force applied on the object.

Answer 1

$m=5, v=25, u=10, t=20 \\ F=ma \\ F=m ( \frac{v-u}{t} ) \\ F=5( \frac{25-10}{20} ) \\ F=0.625 N$

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