Question

Athletes often lands on sand (or foam) after
taking a high jump​

Answer 1

Answer:

Athlete is made to land on the sand after long jump so as to increase the time of impact. This reduces the momentum and force by which he is landing on the ground. Thus, athlete is saved from getting injured.

Explanation:

Answer 2

When an athlete is landing from a height on a hard floor, his feet immediately come to rest which causes a very large force to be exerted on his feet by the floor. In case he lands on sand, for some distance, his feet pushes the sand hence the time period in which the feet comes to halt increases. Consequently, he is saved from getting hurt as the force exerted on his feet decreases.