4- A car is traveling at 30 mi/hr when a traffic light 295 ft ahead turns yellow. The light will remain yellow for 5 s before turning red. (a) What constant acceleration will cause the car to reach the light at the instant it turns red, and what will the velocity of the car be when it reaches the light? (b) If the driver decides not to try to make the light, what constant rate of acceleration will cause the car to come to stop just as it reaches the light? 30 mi/h 295 ft
4- A car is traveling at 30 mi/hr when a traffic light 295 ft ahead turns yellow. The light will remain yellow for 5 s before turning red. (a) What constant acceleration will cause the car to reach the light at the instant it turns red, and what will the velocity of the car be when it reaches the light? (b) If the driver decides not to try to make the light, what constant rate of acceleration will cause the car to come to stop just as it reaches the light? 30 mi/h 295 ft
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:4- A car is traveling at 30 mi/hr when a traffic light
295 ft ahead turns yellow. The light will remain
yellow for 5 s before turning red. (a) What constant
acceleration will cause the car to reach the light at the
instant it turns red, and what will the velocity of the
car be when it reaches the light? (b) If the driver
decides not to try to make the light, what constant
rate of acceleration will cause the car to come to stop
just as it reaches the light?
30 mi/h
295 ft
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