Question

What is momentum? Write its S.I. unit.
Represent the following graphically
(a) momentum versus velocity when mass is fixed.
(b) momentum versus mass when velocity is constant

Answer 1

Momentum of a body is defined as the product of its mass and velocity.It is a vector quantity.
Mathematically,
Momentum (p) = mass (m) x velocity (v)
or, p = m v

S.I. unit of momentum is $kgm/s$

As, momentum (p) = mass x velocity

(a) when mass is fixed,
momentum will vary linearly with velocity as shown in graph.

(b) when velocity is fixed
momentum will vary linearly with mass as shown in graph.