Essential University Physics: Volume 1 (4th Edition)

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 4 - For Thought and Discussion - Page 67: 10


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When the driver hits the breaks quickly or crashes into something, everything in the car will continue in motion unless acted upon by an outside force. If there are seat belts, there will be the outside force, causing the person to stop in a less abrupt manner. However, without seat belts, the outside force may be the car seat or dash board, which will cause the person to stop abruptly and thus may cause serious injury.
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