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The formulas above are used to compute the distance a car [#permalink]
26 Jul 2003, 14:23
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The formulas above are used to compute the distance a car travels after the brakes are applied. If the driver of a car applied the brakes just as a traffic light turned yellow and stopped exactly 6 seconds later, what is the value of V?
Velocity cannot be 0, because that would imply that the car was not moving. So, v = 20
"If the driver of a car applied the brakes just as a traffic light turned yellow" is immaterial. Because if the guy was driving at 20mph and the above equations hold true, he will stop after 6 seconds. Where he applied the brakes(after light turned yellow, red etc.) will not have an effect on the distance traveled.