Physics > EXAM > Crumple Zones_Gizmo - Student Exploration_2022/2023 | Questions & Answers {100%} (All)

Crumple Zones_Gizmo - Student Exploration_2022/2023 | Questions & Answers {100%}

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what is the formula to work out momentum? - -mass x velocity -what are the units for momentum? - -kgm/s -what is the formula to work out force? - -change in momentum divided by time -what doe... s spreading the momentum change over a longer time do? - -reduces force -what is the other formula to work out force? - -mass x acceleration -how is force reduced by reducing the acceleration? - -it increases the stopping or collision time and increases the stopping or collision distance -what are some safety features that reduce force? - -crumple zones, seat belts, air bags, crash barriers and escape lanes -what are the modern features on a car that absorb energy when a vehicle stops suddenly? - -brakes that get hot, crumple zones that change shape, seat belts that stretch a little and air bags that inflate and squash -on impact what do crumple zones do to the energy? - -absorb some of its energy by changing shape -on impact what do seat belts do to the energy? - -stretch a little so some of the persons kinetic energy is converted into elastic energy [Show More]

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