Question

what is the change in momentum of a 1000 kg car moving from 1 m/s to 8 m/s

Answer 1

Initial velocity v1 = 1 m/s
Final velocity v2 = 8 m/s
Mass m = 1000 kg

Change in momentum = final momentum - initial momentum
= m*v2 - m*v1
= m *( v2-v1)
= 1000 * (8 - 1)
= 7000 kg m/s