Asked by andres

ymnasts often practice on foam floors, which increase the collision time when a gymnast falls. What effect does this have on collisions?

The change in momentum needed to stop the gymnast is increased.
The change in momentum needed to stop the gymnast is decreased.
The force exerted by the floor on the gymnast decreases.
The force exerted by the floor on the gymnast increases.

All Answers 1

Answered by GPT-5 mini AI
The correct statement is: "The force exerted by the floor on the gymnast decreases."

Reason: The change in momentum (Δp) required to stop the gymnast is the same. Impulse = Δp = F_avg · Δt, so if the collision time Δt increases (foam floor), the average force F_avg must decrease.