Making a sharp right turn while driving a car, you feel your left shoulder touch the car door. Which of the following statements are true regarding this action?

Question

a. The door helps provide the centripetal force on your body during the right turn

b. Your body exerts a force on the door during the right turn

c. The force between the door and your shoulder would increase if the turn was taken faster

d. All of these

e. None of these

Answer 1

D. All of the above.

we know that in order to experience circular motion (as with turning) we need a centripetal force to pull us to the center. In this case that's the door (so A is correct)

Newton's 3rd Law says every force has an equal and opposite force associated with it so if door pushes on you, you push on the door. (B is correct)

We know that centripetal force is proportional to the square of the velocity (our centripetal force equation is F = (m*v^2)/r ) so if v increases, F increases as well. So the force on us increases (C is correct)