Robert is driving his convertible at the 65-mph speed limit. The car's soft, elastic ragtop roof is in the "up," or closed position, and the car's windows are closed. What will an observer most probable see happening to Robert's ragtop roof as the observer watches Robert's car move along the highway?
1. The roof will bow inward toward the interior of the car.
2. The roof will appear no differently than it would if the car were at rest.
3. The roof will bow outward, away from the interior of the car.
4. The roof will bow inward, however only when Robert is driving uphill.