A particle of mass $2\, kg$ is initially at rest. A force acts on it whose magnitude changes with time. The force time graph is shown below. The velocity of the particle after $10\, s$ is ......... $ms^{-1}$
$20$
$10$
$75$
$50$
A force-time graph for a linear motion is shown in figure where the segments are circular. The linear momentum gained between zero and $8$ second is
What is linear momentum ? Write its $SI$ unit.
A women throws an object of mass $500\,g$ with a speed of $25\, ms^{-1}$.
$(a)$ What is the impulse imparted to the object ?
$(b)$ If the object hits a wall and rebounds with half the original speed, what is the change in momentum of the object ?
A particle of mass $m$ moving with velocity $u$ makes an elastic one dimensional collision with a stationary particle of mass $m$. They are in contact for a very short time $T$. Their force of interaction increases from zero to $F_0$ linearly in time $T/2$, and decreases linearly to zero in further time $T/2$. The magnitude of $F_0$ is
A ball of weight $0.1\, kg$ coming with speed $30\, m/s$ strikes with a bat and returns in opposite direction with speed $40 \,m/s$, then the impulse is (Taking final velocity as positive)