Question

If a force of 250 N act on body, the momentum acquired is 125 kg-m/s. What is the period for which force acts on the body

• A. 0.5 sec
• B. 0.2 sec
• C. 0.4 sec
• D. 0.25 sec

Answer 1

Answer: (A)

0.5 sec

Answer 2

Change in momentum = Impulse

⇒ $\Delta p = F \times \Delta t \Rightarrow \Delta t = \frac{\Delta p}{F} = \frac{125}{250} = 0.5\mspace{6mu}\sec$