Question

stephanie, who has a mass of 75 kg is driving and suddenly slams on her brakes to avoid hitting a student crossing blanco road. she is wearing her seatbelt, which brings her body to a stop at 0.5 seconds. an average foce of 3750 N is exerted on her body during the collision. how fast was she going before applying the brakes? ​

Answer 1

Answer:

25 m/s

Explanation:

Impulse = change in momentum

F Δt = m Δv

(3750 N) (0.5 s) = (75 kg) (v − 0 m/s)

v = 25 m/s