March 30, 2017

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In thrill machine rides at amusement parks ,there can be an acceleration of 3g or more .But without head rests ,acceleration like this would not be safe.think why not?

  • physics - ,

    If your body takes off at 3 g, it tries to pull your head along. The force in Newtons on your neck is then the mass of your head in kg * 3 * 9.8 m/s^2 or three times the weight of your head. Neck breaks, dead.

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