Problema Solution
The function D(t)=17t2-100t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take for the car to skid 170feet.
Answer provided by our tutors
The function that describes the skid distance is:
D(t)=17t^2-100t, where t is the time
We need to find t, t>=0, such that D(t) = 170 ft or
17t^2 - 100t = 170
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click here to see the equation solved for t
........
t = 7.26 s approximately
We need to ignore the negative solution -1.38 since the time can not be negative.
The car needs 7.26 second approximately to skid 170 feet.