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Newton's first law of motion explains the need for head rests because when a car drives when being in a state of non-motion, the passengers in the car will continue to remain without motion. The force of movement will push the passengers back until they compensate for motion. Since the head is likely to get jerked back quickly during this time, it explains the need for headrests.
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Earn +20 ptsQ: How does newtons first law of motion explain the need for headrests?
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