We have all done it. We travel a few miles an hour faster than the posted speed and we think that it's alright. If you do the math traveling 5 mph faster than the posted speed will only get you five miles further down the road. That means you'd need to be traveling six hours to save half an hour of your time. You are also at risk of being lit up by the police and being issued a citation for speeding.

But what could that extra 5 mph cost you in an accident? Physics is an incredible science. This video explains the theory of bodies in motion and what it takes to stop them. You'd be amazed at the difference that extra 5 mph can make in an accident.

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