Final answer:
The effect of centrifugal force on a vehicle entering a curve is a sensation of being pushed outward, due to inertia wanting the body to maintain straight-line motion. It's not a real force but a result of centripetal force, provided by friction, acting towards the curve's center, and it's more noticeable at higher speeds or sharper curves.
Step-by-step explanation:
The effect of centrifugal force on a vehicle when entering a curve is often described as a feeling of being pushed or thrown away from the center of the turn. However, this is a fictitious force that appears to act on you in a rotating frame of reference, like when you're in a turning vehicle. In reality, your body tends to continue moving in a straight line due to inertia, as described by Newton's first law. The actual force acting on the vehicle is the centripetal force, which is directed towards the center of the curve and is often provided by the friction between the tires and the road surface. The magnitude of the felt centrifugal effect increases with the vehicle's speed and with the sharpness of the turn or the curve's tightness.