In the figure given below, the position-time graph of a particle of mass $0.1 \,Kg$ is shown. The impulse at $t = 2\sec $ is .......... $kg\,m\,{\sec ^{ - 1}}$
$0.2$
$ - 0.2$
$0.1$
$ - 0.4$
In the figure given below, the position-time graph of a particle of mass $0.1 \,Kg$ is shown. The impulse at $t = 2\sec $ is .......... $kg\,m\,{\sec ^{ - 1}}$
Velocity between $t = 0$ and $t = 2\sec $
$⇒$ ${v_i} = \frac{{dx}}{{dt}} = \frac{4}{2} = 2\;m/s$
Velocity at $t = 2\sec $, ${v_f} = 0$
Impulse = Change in momentum $ = m({v_f} - {v_i})$
$ = 0.1(0 - 2)$ $ = - 0.2\;kg\;m\;{\sec ^{ - 1}}$
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