High jumper usually lands on a thick soft mattress explain how the mattress helps in reducing the force of impact
The thick soft mattress helps in reducing the force of impact during high jump by several mechanisms. First, the mattress compresses and deforms upon impact, absorbing a significant portion of the kinetic energy of the jumper. This reduces the peak force and pressure exerted on the body upon landing, mitigating the risk of injury or trauma to the bones, joints, and soft tissues.
Second, the mattress elongates the contact time between the jumper and the ground, effectively increasing the impulse required to bring the body to a stop. This reduces the rate of change of velocity, or acceleration, which is the primary determinant of the force of impact. A longer contact time also allows the body to dissipate the remaining kinetic energy through internal mechanisms of deformation and vibration.
Third, the mattress distributes the force of impact over a larger surface area, reducing the stress and strain on any particular region of the body. This helps to prevent localized injuries such as fractures, bruises, or sprains.
Overall, the thick soft mattress acts as a shock absorber, providing a cushioned landing surface that minimizes the risk of injury and allows the high jumper to perform at their best.