Question

A body of mass of 2kg is at rest. what should be the magnitude of fotce which will make the body moves with a speed of 30m/s at the end of 1m/s

Answer 1

Correction for your Q it is not 1m/s it is 1 s ..

the A/P

Given, Mass - [2kg]

V{initial} = (0)

V{final} = 30m/s

Force = [?] [To be calculated]

Force = mass • acceleration

According to formula

Now, we can replace acceleration = (v-u /t)

Therefore, F= 2kg •[30-0/1]

F= 60 N Answer