A car traveling 20 mph can stop in about 40ft, if the same car was traveling twice as fast,?

it's stopping distance would be roughly 80ft or 160 ft? Thanks!! ;)

Answers:

I believe with all the gas america uses we should get it for almost nothing. thats how it is with other items?

It would be 160 feet. Here's why: kinetic energy is equal to one-half of an object's mass multiplied by the square of it's velocity, which is represented by this equation:

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KE = 1/2 x m x v^2

Driving a semi truck and trailers (the risks) please help!?


So when all other things are equal, when a car is moving twice as fast it has four times as much kinetic energy and would therefore require four times as much distance to stop.

When can I get my drivers license?

160ft. Not exactly, but closer to it than 80.

Looking for motoring organisations that can check a vehicle (like RAC & AA) in Spain, Germany & Netherlands??


edit: Sorry, I was going by the formula, y=.6x2+1.1x, which is supposed to compensate for human reaction time, among other factors, and got 140ft. If you're just using the kinetic energy formula, which I suspect is where you got the first distance, then Sarge is right.

Are you pleased with the price of gasoline?

Your brakes bad, or are you just a slow thinker.I would not like to be in front of you on the road,
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