Question

A body of mass 4 kg is kept at rest. a constant force of 8 kg f starts acting on it. find the time taken by the body t move through a distance of 20 m

Answer 1

Explanation:

I will assume that the force is 8N, since Newton is the SI unit of force.

So,

f = m * a

8 = 4 * a

a = 2m/s^2

Using the following formula of motion:

s = ut + 1/2at^2

20 = 0 * t + 1/2 * 2 * t^2

20 = t^2

t = $\sqrt{20}$

Regards,

Lilac584