Vocabulary: acceleration, airbag, collision avoidance system, crash test dummy, crumple zone,
force, kinetic energy, NeZWon¶s laZs of moWion, safety cell, seat belt, work, work-energy theorem
Prior Knowledge Questions
...
Vocabulary: acceleration, airbag, collision avoidance system, crash test dummy, crumple zone,
force, kinetic energy, NeZWon¶s laZs of moWion, safety cell, seat belt, work, work-energy theorem
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Two burglars run down an alley at night, trying to escape the cops.
Jack is carrying a rigid metal safe. Jill is carrying an armful of
antique quilts. In the pitch dark, they both collide headlong into a
concrete wall.
1. Who do you think will be hurt more in the collision, and why?
2. During a car crash, what features of the car might act like either Jack¶s safe or Jill¶s qXilWs?
Gizmo Warm-up
When cars were first invented, the safety of passengers was
not a great concern. As vehicles grew larger and faster,
accidents became more deadly. Safety features went from
being a rare luxury to a legal requirement. In the Crumple
Zones Gizmo, you will design cars that will help a crash test
dummy survive a collision.
1. To begin, do not make any changes to the DESIGN tab of the Gizmo. Select the CRASH
TEST tab, and click Play ( ). After the crash, click Slo-mo replay. What happens?
2. Select the RESULTS tab to read about the results of the crash. Do you think a passenger
would have survived this car crash? Explain.
Jackwillbehurtmorebecausetherigidsafewillhithimwinthesameforcethatithitsthe
wallbutJillhasquiltstocushiontheimpact
ayameseamen
DuringacarcrashmerigidframewillactlikeJack'sasewhiletheairbagswillactlikeJill'squiltrelieving pressureandimpact
Thecar crashesinto a concretewall and pieces ofglass flyoff the windshield
A passengerwouldn't be able
to survive this crash because of trauma to theheadandtorso
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