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Nick's glasses were found in the car. and investigators wanted to know if nick had been wearing them when the crash occurred. so they created a styrofoam facsimile of nick's head. >> i weighted the styrofoam head so that it was approximately the same weight as nick's head would have been in that same situation. >> they put an identical pair of glasses on the model to simulate the force of impact. it was attached to a pendulum. >> based on a potential energy formula, mass times gravity times height, i lifted the head that given height, allowed it to swing down, and it collided with the steering...

Nick's glasses were found in the car. and investigators wanted to know if nick had been wearing them when the crash occurred. so they created a styrofoam facsimile of nick's head. >> i weighted the styrofoam head so that it was approximately the same weight as nick's head would have been in that same situation. >> they put an identical pair of glasses on the model to simulate the force of impact. it was attached to a pendulum. >> based on a potential energy formula, mass times gravity times height, i lifted the head that given height, allowed it to swing down and it collided with the steering ...

>> they put an identical pair of glasses on the model to simulate the force of impact. it was attached to a pendulum. >> based on a potential energy formula, mass times gravity times height, i lifted the head that given height, allowed it to swing down and it collided with the steering wheel. >> this was a virtual re-creation of what would happen if nick's head had hit the steering wheel when the car crashed into the river at 15 miles per hour. there was far less damage to the test glasses than the ones found in the car. >> my conclusion was nick's head did not collide with the steering wheel ...

Miles per hour. nick's glasses were found in the car. and investigators wanted to know if nick had been wearing them when the crash occurred. so they created a styrofoam facsimile of nick's head. >> i weighted the styrofoam head so that it was approximately the same weight as nick's head would have been in that same situation. >> they put an identical pair of glasses on the model to simulate the force of impact. it was attached to a pendulum. >> based on a potential energy formula, mass times gravity times height, i lifted the head that given height, allowed it to swing down and it collided wi...

Water, it was moving at only 15 miles per hour. nick's glasses were found in the car. and investigators wanted to know if nick had been wearing them when the crash occurred. so they created a styrofoam facsimile of nick's head. >> i weighted the styrofoam head so that it was approximately the same weight as nick's head would have been in that same situation. >> they put an identical pair of glasses on the model to simulate the force of impact. it was attached to a pendulum. >> based on a potential energy formula, mass times gravity times height, i lifted the head that given height, allowed it ...