find the change in momentum of a car weighing 1500kg when its speed increases from 36km/h to 72km/h uniformly
M=1500kg
U=36km/hr or 10m/s
V=72km/hr or 20m/s
Change in momentum=m*v-m*u
=1500*20-1500*10
=30000-15000
=15000Kgm/s
starting momentum: 1500*36
final momentum: 1500*72
That gives you momentum in kg-km/hr
you probably want it in kg-m/s, so you need to convert km/hr to m/s.