Increasing the time of impact decreases the rate of change of momentum, thereby reducing the force required to stop the falling athlete. This principle is crucial in minimizing injury during high jump events.
How does increasing the time of impact affect the force required to stop a falling athlete in a high jump event?
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Increasing the time of impact in a high jump event reduces the force required to stop a falling athlete. This is explained by the impulse-momentum theorem (Δp = F × Δt), where force (F) is inversely proportional to the duration of impact (Δt). A longer time of impact means a smaller force is needed to bring the athlete to a stop. Landing on a cushioned surface or sand bed increases the time it takes for the athlete to decelerate, distributing the force over a more extended period. This minimizes the peak force, promoting a safer landing by reducing the risk of injury.