Final answer:
The sideways force experienced when a car turns sharply is known as centrifugal force, which is a perceived effect and not an actual force. The real force that enables a car to turn is the centripetal force, normally supplied by tire-road friction or the normal force on banked curves. The correct answer is c.)centrifugal force.
Step-by-step explanation:
The sideways force one feels when a car turns sharply is often called centrifugal force. This sensation arises because, as per Newton's first law, your body attempts to maintain a straight-line motion even as the car turns.
Inside the car, it appears as if there is a force pushing you away from the turn's center, but this is not a real force acting on you; rather, it's a fictitious force due to your body's inertia.
When a car turns, the actual force that keeps the car on its curved path is the centripetal force, which acts towards the center of the turn. This force is usually provided by the friction between the car's tires and the road, which allows the car to follow the circular trajectory.
If a car is on a banked curve, the normal force from the road can also have a component that acts as the centripetal force, helping the car turn without the need for friction.