What is "airtime" in the context of roller coaster rides?

Airtime refers to the sensation of weightlessness experienced during specific sections of a roller coaster ride, particularly during drops or hills. This feeling occurs when the coaster train moves over the top of a hill and begins its descent, creating a moment where the forces acting on the rider change rapidly, making them feel as though they are momentarily floating or suspended in the air.

This sensation can be enhanced by the design of the coaster itself, particularly if the hills are steep or if there are sudden drops. Riders often eagerly anticipate this experience, as it contributes significantly to the thrill and excitement of the ride.

The other options describe different sensations or experiences related to roller coasters. For instance, the sensation of speed during turns might be felt but does not specifically relate to the feeling of weightlessness. Similarly, being upside down is associated with inversions, which impart a different experience than airtime. High speeds contribute to the overall thrill of a ride but do not directly define the unique sensation of airtime.