QUESTION 1 4 points Save Answer Which of the following is NOT a true statement? O a. The friction force has no units. O b. The friction force always acts along the surface on which an object moves. O c. The force of static friction for an object sliding along a given surface is always larger than the force of kinetic friction for the same object sliding on the same surface. O d. The friction force is always smaller than the normal force. QUESTION 2 4 points Save Answer Which of the following is NOT a true statement? O a. The coefficient of friction can be measured in N. O b. The coefficient of kinetic friction is equal to the ratio of the kinetic friction force to the normal force. O c. the coefficient of kinetic friction is always less than 1. O d. The coefficient of static friction for a given pair of surfaces is always greater than the the coefficient of kinetic friction for the same pair of surfaces