Question 189305: can you please help me solve this equation?????
The formula for questions 14-16 came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the distance of the skid marks. So when you get to problem 16, it is referring to what a person would interpret the situation if the skid mark was zero distance. So, if the skid mark distance equaled zero, that would mean, the speed of the vehicle, r, was zero, or that the car was able to stop instantly.
16. If the distance the car traveled after applying the brakes equals 20 feet, what does that mean to the officer investigating the accident? (HINT: Let d = 20, bring 20 to the right so that the equation equals zero, identify the coefficients, A, B and C and then use the quadratic formula to solve mathematically)
a. The car was stopped when the driver applied the brakes.
b. The car was going about 12.36 miles per hour
c. The car was going about 32.36 miles per hour
d. There is not enough information to determine the correct answer.
Answer by Alan3354(69443)   (Show Source):
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