Look at the following:
http://www.teachersdomain.org/asset/eng06_vid_airbag/
http://www.safetyforum.com/seatbelts/
Draw a diagram for your force net for both the collision into the wall and the collision with cups.
Determine Barbie's g-force in each case (accel/accel(g)). Determine the net force on Barbie, using the accelerometer value, and the Net force on Barbie and the car.
Comment on the design of your seat belt and bumper in terms of a) durability b) safety and c) similarity to air bag principles.
Write a one page summary of what you have learned.
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