How do I solve this word problem?
When a car slams on its brakes and starts to skid, it leaves skid marks on the road. Investigators use these marks to determine how fast a car was going when it started to brake. The car's speed, #v# (in feet per second) is related to the skid mark length, #d# , (in feet) by the equation #v=√32fd#
v=32fd, where
#f# is the coefficient of friction determined by the material the car was skidding on.
Wet asphalt has a coefficient of friction of 0.5. If a car was driving 25 miles per hour and slams on its brakes, how long of a skid mark will it leave? 1 mile = 5280 feet.
When a car slams on its brakes and starts to skid, it leaves skid marks on the road. Investigators use these marks to determine how fast a car was going when it started to brake. The car's speed,
v=32fd, where
Wet asphalt has a coefficient of friction of 0.5. If a car was driving 25 miles per hour and slams on its brakes, how long of a skid mark will it leave? 1 mile = 5280 feet.
1 Answer
The given equation tells the relationship between the velocity and the length of skid mark,so simply by putting the given values,we can determine the length of the skid mark.
Given,
So,from the equation,we get the length of the skid mark=