Explain -product of mass and velocity is important in producing effect of force.

$100 \,g$ of a iron ball having velocity $10 \,m/s$ collides with a wall at an angle ${30^o}$ and rebounds with the same angle. If the period of contact between the ball and wall is $0.1 \,second$, then the force experienced by the ball is …………. $\mathrm{N}$

A body of mass $3\, kg$ hits a wall at an angle of $60^o$ and returns at the same angle. The impact time was $0.2 \;.s$ Calculate the force exerted on the wall

An object with a mass $10 \,kg$ moves at a constant velocity of $10 \,m/sec$. A constant force then acts for $4\, second$ on the object and gives it a speed of $2\, m/sec$ in opposite direction., the impulse acting on the object is ……… $newton \times \sec $

The momentum is most closely related to