Problema Solution
after an accident police determine the speed at which a car was traveling by the formula r=2 square root of 5L which approximates the speed r,in miles per hour, of a car that has left a skid mark of length L , in feet. how far will the car skid at 65 mph
Answer provided by our tutors
r = 2√(5L)
r = speed of the car in mph
L = the length of the skid mark
We need to find L when r = 65 mph:
2√(5L) = 65
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click here to see the equation solved for L
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L = 211.25 ft
At 65 mph the car will skid 211.25 feet.