Question

A care of mass 100 is moving with velocity of 72 km/hr Find its momentum

Answer 1

Hey mate.......
Given that,
Mass = 100 kg
Velocity = 72 km/h
Momentum = Mass × Velocity
p = mv
= 100 × 72
= 7200.
Hope it helps

Answer 2

here mass=100kg if it is in gram then convert it in kg ok
and velocity=72km/h=20m/s
now use formula of momentum
$\frac{1}{2} \times m {v}^{2}$
so this will
$\frac{1}{2} \times 100 \times 20 \times 20$
=20000