Your last submission is used for your score 1 points AutlAlg6 10.4.005 A car wit

Question

Your last submission is used for your score 1 points AutlAlg6 10.4.005 A car with good tire tread can stop in less distance than a car with poor tread. The d0.04 0.5v, where v is the speed of the car. If the driver must be able to stop within 54 ft, what is the maximum safe speed, to the nearest mile per hour of the car? My formula for the stopping distance d n er of a car th od read on r y ement approximated mph 2. 2 points AutiAlg6 10.4006 is launched with an initial velocity of 250 ft/s. The height, h, in feet, of the rocket t seconds after the launch is given by h1622s0t. How many launch will the rocket be 570 ft above the grou nd? Round to the nearest hundredth of a second s (smaller value) s (larger value) Need Help? Read It 844 PM Type here to search

Explanation / Answer

d = 0.04v^2+ 0.5v

plugging d = 54

54 = 0.04v^2+ 0.5v

.04v^2 + 0.5v - 54 = 0

v = [ - 0.5 +- sqrt (0.5^2 - 4* -54 * .04 )] / 2 (.04)

v = 31.02

maximum safe speed = 31 mph

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