Question

What is the change in momentum of a car weighing 1500kg when it speed increase from 36 km/h to 72km/h uniformly

Answer 1

15000 kg m / s as change in momentum = m(v-u). so Change in momentum = 1500 (20 - 10).

note that 36 km / hr =10 m/s

and 72km / hr = 20 m/s.