Question

What is the momentum of a car weighing 1500 kg when the speed increases from 36km/h to 72km/h uniformly?

Answer 1

Momentum of car at speed $36$km/h=$10$m/s=$m\times 10$

$=1500\times 10$

$=15000$kg m/s

Momentom of car at speed $72$km/h=$20$m/s=$m\times 20$

$=1500\times 20$

$=30000$kg m/s

Momentom change=$30000-15000=15000$kg m/s