Question

What is momentum? Write its SI unit. Interpret force in terms of momentum. Represent the following graphically (a) momentum versus velocity when mass is fixed. (b) momentum versus mass when velocity is constant.

Answer 1

Definition:

Momentum seems to be the proportion of motion of a moving object. It is calculated by multiplying the mass by velocity.

1. The SI unit of momentum is $\mathrm{kg}\mathrm{m}{\mathrm{s}}^{-1}$.
2. Formula: $\mathrm{Momentum}=\mathrm{mass}\times \mathrm{velocity}$
3. Force in terms of momentum is $\text{Force=Rate of change in momentum}$

Momentum versus velocity when mass is fixed.

$\mathrm{P}=\mathrm{mv}$

When m is constant momentum will be directly proportional to velocity.

Step 3: Momentum versus mass when velocity is constant.

$\mathrm{P}=\mathrm{mv}$

When v is constant momentum will be directly proportional to mass.