Question

force of 4 N is applied on a body of mass 20 kg .it's acceleration

Answer 1

first apply the formula of force and solve and multiply it

Answer 2

$force = mass \times acceleration$
So,

$acceleration = \frac{force}{mass} \\ \\ a = \frac{4}{20} \\ \\ \\ a = 0.2m \: per \: sec$