Usain Bolt vs. Gravity

When an object falls freely under gravity, why does it cover greater distances in successive equal time intervals?

• It experiences constant velocity.

• Its acceleration decreases over time.

• Its speed increases due to constant acceleration.

• Air resistance becomes negligible.

A diver jumps from a 10-meter platform. What is the approximate speed of the diver after falling 3 meters?

• Less than 10 mph

• Approximately 17 mph

• Approximately 31 mph

• Greater than 40 mph

In a hypothetical race, who would reach a 10-meter mark first: Usain Bolt running 10 meters or a rock dropped from a 10-meter height?

• Usain Bolt, because he is a world-record sprinter.

• The rock, because gravity provides constant acceleration.

• It would be a tie, as both cover 10 meters.

• Neither, as the conditions are not comparable.

An Olympic diver jumps upwards from a 10-meter platform. How does their time to reach the water compare to Usain Bolt running 10 meters?

• The diver reaches the water faster than Bolt finishes running.

• Bolt finishes running faster than the diver reaches the water.

• They both reach their respective 10-meter marks at the same time.

• The diver's upward jump makes it impossible to compare.