Question

A certain force acting on a rest object of mass of 15km for 3s , gives it a velocity of 2m/s.Find the magnitude of force?

Answer 1

inital velocity of that object = 0
final velocity = 2m/s

time taken = 3s

then acceleration = (v-u)/t
= ( 2-0)/3
= 2/3


it's mass = 15kg

force = mass × acceleration
= (2/3) ×15
= 10

so, the magnitude of the force was 10N.

Answer 2

By applying the formula of Newton's second equation "F=ma"