Concept explainers
A car accelerates along a road. Identify the best combination of forces exerted on the car in the horizontal direction that explains the acceleration.
a. The force exerted by the engine in the direction of motion and the kinetic friction force exerted by the road in the opposite direction
b. The static friction force exerted by the road in the direction of motion and the kinetic friction force exerted by the road in the opposite direction
c. The static friction force exerted by the road in the direction of motion and the friction force exerted by the air in the opposite direction
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