Question

A force time graph for the motion of a body is shown in figure. Change in linear momentum between $0$ and $8s$ is :

• A. $0$
• B. $4Ns$
• C. $8Ns$
• D. none

Answer 1

The correct option is A $0$

The area under the graph gives linear momentum

Linear momentum=Force×time

Change in momentum=$(-2\times 2)+(4\times 1)+(-1\times 1)+(1\times 1)=5-5=0$

Change in momentum=0