Question

A car is moving along a level road at a constant $60km/hr$. Find out the force acting on the car from the tires of the car ?

• A. Equal to the power of the engine
• B. The normal force times the coefficient of friction
• C. Larger than the normal force times the coefficient of friction
• D. Less than the normal force times the coefficient of friction
• E. Zero

Answer 1

The correct option is E Zero

Since the car is moving with constant velocity, there is no external force acting on the car. Only tires can apply the force on the car, thus, the force acting on the car because of tires is zero.