Question

What is momentum? Write its SI unit. Interpret force in terms of momentum.

Represent the following situation graphically

Momentum versus mass when velocity is constant

Answer 1

Momentum (Linear momentum) for moving body is defined as the product of mass and velocity. If a body is moving with velocity, v and having mass, m then momentum of body is p $=m\times v$. SI unit of momentum (p) is kgm$s^{-1}$.

Force is defined as rate of change of momentum.
F$=\frac{dp}{dt}$
F$=m(v_2-v_1$)