During a test crash, an air bag inflates to stop a dummy's forward motion. The dummy's mass is 80 kg. If the net force on the dummy is 850 N toward the rear of the car, what is the dummy's deceleration?

A. 0.09 m/s^2

B. -10.625 m/s^2

A car carrying a test dummy crashes into a wall at and is brought to rest in . Show that the average force exerted by the seat belt on the dummy is ?

A car carrying a 75-kg test dummy crashes into a wall at 25m/s and is brought to rest in 0.1s. Show that the average force exerted by the seat belt on the dummy is 18,750N?