A car weighing 5000 N is traveling along a straight level road powered by a forward drive force of 500 N. The force of air resistance is 200 N, and rolling resistance is 100 N. The car's acceleration is
A) in the forward direction.
B) zero.
C) in the backward direction.
D) in the downward direction.
E) in a direction that is sideways to the car.

Question

Quizplus · Accepted Answer

The net force acting on the car is the forward drive force minus the sum of air resistance and rolling resistance (500 N - 200 N - 100 N = 200 N). Since the net force is positive and in the forward direction, the car's acceleration is also in the forward direction.

A Car Weighing 5000 N Is Traveling Along a Straight