A driver moving at a constant speed sees a log in the road, but it takes time for her to react. During the reaction time, the car keeps going at the same speed. The distance the car travels before the driver breaks is the reaction distance. At 75 miles/hour, the reaction distance is 165 feet. What is the reaction time in seconds?
+129839 Note : 88 ft/sec = 60 mph .....so.....
75 mph = [ 88 ft/sec / 60 mph] = 110 ft / sec
So
165 ft / [110 ft / sec] =
1.5 sec = reaction time
@CPhill Ohhhhh i didn't see that, but where did 88ft/sec and 60mph and 110ft come from?
+37095 You have to use these 'constants' to convert 75 m/hr to ft/s to solve the problem....
