Centripetal force is best described as:

Centripetal force is best described as:

• A. It pushes outward away from the curve
• B. It is caused by aerodynamic drag
• C. It holds the vehicle on the curve and arises from friction between tires and road
• D. It acts perpendicular to the direction of travel

Answer: (C)

Centripetal force is the inward force that keeps an object moving in a circle. For a car on a curve, that inward pull comes from static friction between the tires and the road. As the car’s inertia tends to keep it going straight, friction at the tire-road interface redirects some of that motion toward the curve’s center, providing the necessary centripetal acceleration to follow the curve. This inward force is what “holds” the vehicle on the path. It’s not an outward push, and aerodynamic drag doesn’t supply the inward component. While the inward force is perpendicular to the car’s instantaneous velocity in steady circular motion, the key point is that friction is the source of the centripetal force that keeps the car on the curved path. If grip is reduced, the centripetal force decreases and the car can skid outward.

Centripetal force is the inward force that keeps an object moving in a circle. For a car on a curve, that inward pull comes from static friction between the tires and the road. As the car’s inertia tends to keep it going straight, friction at the tire-road interface redirects some of that motion toward the curve’s center, providing the necessary centripetal acceleration to follow the curve. This inward force is what “holds” the vehicle on the path. It’s not an outward push, and aerodynamic drag doesn’t supply the inward component. While the inward force is perpendicular to the car’s instantaneous velocity in steady circular motion, the key point is that friction is the source of the centripetal force that keeps the car on the curved path. If grip is reduced, the centripetal force decreases and the car can skid outward.