raffic engineers study how long the yellow light for a traffic signal should be. For one intersection, the number of seconds n required for a yellow light is related to the average approach speed v, in feet per second, by the following. n = 1 + v 30 + 100 v If the approach speed is 30 feet per second (about 20 miles per hour), how long should the yellow light be? (Round your answer to two decimal places.)
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raffic engineers study how long the yellow light for a traffic signal should be. For one intersection, the number of seconds n required for a yellow light is related to the average approach speed v, in feet per second, by the following.
v |
30 |
100 |
v |
If the approach speed is 30 feet per second (about 20 miles per hour), how long should the yellow light be? (Round your answer to two decimal places.)
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