Question

The position-time graph of a particle of mass $2\text{kg}$ moving along $x$-$\text{axis}$ is shown in figure. The magnitude of impulse on particle at $t=2\text{s}$is

• A. Zero
• B. $10$ N s
• C. $20$ N s
• D. $40$ N s

Answer 1

The correct option is D $40$ N s

Answer (1)
Impulse = change in momentum
$\text{Impulse}=2[-10-10]=-40\text{Ns}$
$\text{Magnitude}=40\text{Ns}$