So his equation is
s = √(30(.7d))
so his speed according to your formula was
s = √((30)(.7)(52)) = 10.3 m/h
I think your formula is wrong.
The Formula s= sqrt 30fd can be estimated the speed of s, in miles per hour that a car is traveling when it goes into a skid, where f is the coefficient of friction and d is the length of the skid marks in feet. Kody skids to a stop on a street with a speed limit of 35 mi/h. his skid marks measure 52ft and the coefficient of friction is 0.7 Kody says he was driving only 30 mi/h Kody wants to prove he wasn't speeding.
Solve the equation for d in terms of s.
Please help me ive been stuck on this for hours.
5 answers
A total of 71 ft of dark skid marks after collision of 2 vehicles. How fast would the vehicle that hit unit 2 be going?
t7u
The equation s = can be used to find a car’s speed s in miles per hour given the length d in feet of a skid mark and the friction factor f of the road. Police measured a skid mark of 90 feet on a dry concrete road. If the speed limit is 35 mph, was the car speeding? Explain.
10. The equation s = square root 30fd can be used to find a car’s speed s in miles per hour given the length d in feet of a skid mark and the friction factor f of the road. Police measured a skid mark of 90 feet on a dry concrete road. If the speed limit is 35 mph, was the car speeding? Explain.
1 answer