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ys left in your Cengage Unlimited subscription trial. Learn more for less with access to over 22,000 ebooks and digital lear 1. 44 points SerCPWA11 1.WA.002 (a) A car speedometer has a 496 uncertainty, what is the range of possible speeds when it reads 50 km/h? lowest highest km/h km/h (b) Convert this to miles per hour. lowest highest mi/h mi/h Submit Answer Save Progress Practice Another Version 2. O -12 points SerCPWA11 1.WA.018 A car is traveling at a speed of 96 feet per second (a) What is its speed in kilometers per hour? km/h (b) Is it exceeding the 55 mile per hour speed limit? O Yes O No , 14 points SerCPWA11 1.WA.019. d in 116 meters long and 45 meters wide. What are its dimensions in feet?Explanation / Answer
1)
lowest = 50 - 4% of 50
= 50 - 0.04*50
= 48 km/h
highest = 50 + 4% of 50
= 50 + 0.04*50
= 52 km/h
b)
lowest = 48/1.609 mi/h (since 1 mi = 1.609 km)
= 29.8 mi/h
highest = 52/1.609
= 32.3 mi/h
2)
a) v = 96 feet/s
= 96*0.3048 m/s
= 29.26 m/s
= 29.26*60*60/1000 km/h
= 105 km/h
b) yes.
because, v = 105/1.609 mi/h
= 65.2 mi/h > 55 mi/h
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