9. Newton’s 3rd Law of Motion says that if a car crashes into a wall__________.
A) the car pushing the wall is the only force
B) the car pushes on the wall and the wall pushes back on the car with an equal force
C) the car pushes on the wall with a strong force and the wall pushes back with a weak force
D) the car pushes on the wall and the wall pushes back with a stronger force