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January 28, 2015

January 28, 2015

Posted by **jim** on Monday, February 27, 2012 at 8:09pm.

- physics -
**MathMate**, Monday, February 27, 2012 at 8:37pmA cars kinetic energy is proportional to the square of it's speed. The energy dispensed in braking is proportional to the braking distance.

Therefore the braking distance is proportional to the square of the speed, as in (120 km/hr / 50 km/hr)² * 15m

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