Question

Find the impulse a 1500 kg car experiences slowing down from 40m/s to 10m/s?

Answer 1

Answer: - 45000 N.s

Explanation: Impulse is equal to the change in momentum

J = Δp

To solve for impulse we calculate the change in momentum

Δp = m ( Δv)

     = 1500 kg ( 10 m/s - 40 m/s)

     = - 45000 N.s