Sarah, who has a mass of 55 kg, is riding in a car at 20 m/s. She sees a cat crossing the street and slams on her brakes! Her seatbelt stops her from flyinh forwarf, bringing her to a rest in 0.5 seconds. How much force did the seatbelt put on Sarah?
Use momentum and impulse for this
p is momentum, m is mass, v is velocity, t is time, and f is force
this equation can be manipulated to find p/t=f
because you can divide both sides by time to find
p/time=ma recall v/t =a