A car is speeding up in the forward direction on a level road.


a. The frictional force acting from the road on the tires is pointed forward.

b. The frictional force acting from the road on the tires is pointed backward.

c. There is not enough information to determine the direction of the frictional force from the road on the tires.

a. The frictional force acting from the road on the tires is pointed forward.

To determine the direction of the frictional force acting from the road on the tires of a car that is speeding up in the forward direction on a level road, you need to consider the relationship between the car's motion and the frictional force.

As the car is speeding up, there must be an unbalanced force acting on it in the forward direction, according to Newton's second law of motion (F = ma). This force is typically provided by the engine or motor of the car.

The frictional force between the tires and the road opposes the motion of the car. So, when the car is speeding up in the forward direction, the frictional force will be pointed backward, acting in the opposite direction of the car's motion.

Therefore, the correct answer is b. The frictional force acting from the road on the tires is pointed backward.