Which of the following free-body diagrams represents the car going downhill without acceleration?
A) 1
B) 2
C) 3
D) 4
E) 5

Question

Which of the following free-body diagrams represents the car going downhill without acceleration? 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Quizplus · Accepted Answer

Free-body diagram 3 shows the forces acting on the car going downhill without acceleration, where the weight force is counteracted by the normal force from the road and the force of friction. The other diagrams either show a car with acceleration (A) or do not properly balance the forces (B, D, E).

Which of the Following Free-Body Diagrams Represents the Car Going