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# Reaction time for car travel

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A car is traveling at 60 mph and is tailgating another car at distance of only 30 ft. If the reaction time of the tailgater is 0.5 seconds (time between seeing the brake lights of the car ahead flash and hitting the brake), how far will his car travel during his reaction time?

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Solution:
First we shall have to convert miles per hour (mph) to feet per second (fps).
1 mile=5280 feet
1 hour=3600 seconds
∴60 mph=(60×5280)/3600 fps= 88 feet/sec
∴The initial speed of the car is 88 feet/sec. ...

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• MSc, Osmania University
• MSc, Indian Institute of Technology - Roorkee (I.I.T.-ROORKEE)
• BSc, Banaras Hindu University
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