What is the reaction of high-jumper lands on a mat?

When a high-jumper lands on a mat, the reaction involves a rapid deceleration as their body comes into contact with the soft surface. The mat absorbs much of the impact force, allowing for a safer landing compared to harder surfaces. The athlete's muscles and joints also engage to help stabilize and control the landing, reducing the risk of injury. Overall, the mat provides cushioning that mitigates the effects of gravity and momentum during the landing process.