14. The inertia of a body tends to cause the body to: (A) speed up (B) slow down (C) resist any change in its motion (D) fall toward the Earth (E) decelerate due to friction

13. A boy pulls a wooden box along a rough horizontal floor at constant speed by means of a force as shown. In the diagram f is the magnitude of the force of friction, N is the magnitude of the normal force, and Fg is the magnitude of the force of gravity. Which of the following must be true? (A) P = f and N = Fg (B) P = f and N ＞ Fg (C) P ＞ f and N ＜ Fg (D) P ＞ f and N = Fg (E) None of the above.

14. The inertia of a body tends to cause the body to: (A) speed up (B) slow down (C) resist any change in its motion (D) fall toward the Earth (E) decelerate due to friction

其他試題

14. The inertia of a body tends to cause the body to:
(A) speed up
(B) slow down
(C) resist any change in its motion
(D) fall toward the Earth
(E) decelerate due to friction