Displacement of a particle of mass $2\, kg$ moving in a straight line varies with time as $s  = (2t^3 + 2)\, m$. Impulse of the force acting on the particle over a time interval between $t = 0$ and $t = 1\, s$ is .......... $N-s$

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  ......... $\sec$

What is linear momentum ? Write its $SI$ unit.

A rocket can go vertically upwards in earth's atmosphere because

This question has Statement $1$ and Statement $2$. Of the four choices given after the Statements, choose the one that best describes the two Statements.

Statement $1$: If you push on a cart being pulled by a horse so that it does not move, the cart pushes you back with an equal and opposite force.

Statemf'nt $2$: The cart does not move because the force described in statement $1$ cancel each other

The time in which a force of $2 \,N$ produces a change of momentum of $0.4\,kg - m{s^{ - 1}}$ in the body is ......... $\sec$