
impact force
Impact force is the force exerted when two objects collide over a very short period of time. It depends on how quickly the objects change their momentum—that is, their motion—during the collision. A heavier or faster object hitting something will produce a larger impact force. For example, a car crash involves a sudden, high impact force that can cause significant damage. Understanding impact force helps in designing safety features like airbags and crumple zones, which absorb and reduce the force, minimizing injury or damage.