Question

A force acts for 0.2 s on a body of mass 3 kg
initially at rest. The force is then withdrawn and the
body moves with a velocity of 2m/s. Find the
magnitude of force.

Answer 1

GiveN :

• Initial velocity = 0 m/s
• Final velocity = 2 m/s
• Time = 0.2s
• Mass = 3kg

To FinD :

• Magnitude of force

SolutioN :

⇒F = ma

⇒F = m * (v - u)/t

⇒F = 3 * (2 - 0)/0.2

⇒F = 3 * 10

⇒F = 30 N