A car was travelling at 20 m/s when it crashed into a wall.The car came to rest in 0.15s. A passenger who was strapped with a safety belt moved forward a distance of 0.20m against the force wxerted by the safety belt.[Mass of the passenger is 56kg]
Calculate the average force exerted by the safety belt on the passenger.
deceleration = 20 / 0.15
average force = ma