Question

A force of 4 newton acts on a body of mass 2 kg for 4 seconds if the initial velocity is zero find its velocity when the force stops acting

Answer 1

Answer:

v = 8 m/s

Explanation:

F = 4 N     &      m = 2 kg       &      u = 0 m/s      &       t = 4s    &        v = ?

F = m a  ⇒ a = F / m

a = 4 / 2 = 2 m/s²

v = u + at

v = 0 + 2x4

v = 8 m/s