An automobile travels due north with a speed of 68 km/h and an acceleration of 1.5 m/s². All forces considered, the unbalanced force acting on the auto is A) zero. B) southward. C) northward. D) downward. E) upward.

Question

Quizplus · Accepted Answer

Since the automobile is accelerating northward (the direction of its velocity), the unbalanced force must also be acting in the same direction, northward, according to Newton's second law of motion.

An Automobile Travels Due North with a Speed of 68