A body, whose momentum is constant, must have constant
Force
Velocity
Acceleration
All of these
$STATEMENT-1$ A cloth covers a table. Some dishes are kept on it. The cloth can be pulled out without dislodging the dishes from the table. because
$STATEMENT- 2$ For every action there is an equal and opposite reaction.
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 ......... $\sec$
A body of mass $‘M’$ collides against a wall with a velocity $v$ and retraces its path with the same speed. The change in momentum is (take initial direction of velocity as positive)
A block of mass $5 kg$ moves along the $x$-direction subject to the force $F=(-20 x+10) N$, with the value of $x$ in metre. At time $t=0 s$, it is at rest at position $x=1 m$. The position and momentum of the block at $t=(\pi / 4) s$ are