If a car brakes at constant deceleration, the stopping distance is doubled when the initial speed is twice as great.

Name: If a car brakes at constant deceleration, the stopping distance is doubled when the initial speed is twice as great.
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Question

Quizplus · Accepted Answer

The stopping distance increases by a factor of four, not two, when the initial speed is doubled, because stopping distance is proportional to the square of the initial speed when deceleration is constant.

If a Car Brakes at Constant Deceleration, the Stopping Distance