Braking Distance Braking distance for cars on level pavement can be approximated by D(x) = The input x is the car's velocity in miles per hour and the output D(x) is the braking distance in feet. The positive constant k is a measure of the traction of the tires. Small values of k indicate a slippery 30 road or worn tires. (Source: L. Haefner, Introduction to Transportation Systems.) (a) Let k = 0.3. Evaluate D(60) and interpret the result. (b) If k = 0.25, find the velocity x that corresponds to a braking distance of 300 feet.

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
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ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter5: A Survey Of Other Common Functions
Section5.4: Combining And Decomposing Functions
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Braking Distance Braking distance for cars on level
pavement can be approximated by D(x) =
The input x is the car's velocity in miles per hour
and the output D(x) is the braking distance in feet.
The positive constant k is a measure of the traction
of the tires. Small values of k indicate a slippery
30
road or worn tires. (Source: L. Haefner, Introduction to
Transportation Systems.)
(a) Let k = 0.3. Evaluate D(60) and interpret the
result.
(b) If k = 0.25, find the velocity x that corresponds
to a braking distance of 300 feet.
Transcribed Image Text:Braking Distance Braking distance for cars on level pavement can be approximated by D(x) = The input x is the car's velocity in miles per hour and the output D(x) is the braking distance in feet. The positive constant k is a measure of the traction of the tires. Small values of k indicate a slippery 30 road or worn tires. (Source: L. Haefner, Introduction to Transportation Systems.) (a) Let k = 0.3. Evaluate D(60) and interpret the result. (b) If k = 0.25, find the velocity x that corresponds to a braking distance of 300 feet.
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