Question

A force of 4.0 N acts on a body of mass 2.0 kg for
4.0 s. Assuming the body to be initially at rest, find
(a) its velocity when the force stops acting,
​

Answer 1

☑️ Force = 4 N

☑️ Mass of the body = 2 kg

☑️ Time of action = 4 S

☑️ Initial velocity of the body = 0

Velocity of the body after the force stops, i.e., when no force is acting on the body then it's velocity will be given by :

Velocity of the body after the force stops, i.e., when no force is acting on the body then it's velocity will be given by :v = u + at = (0 + 2×4) m/s = 8 m/s