A giraffe can run about 14 meters per second. Find its speed in miles per hour. (1 mi = 5280 ft; 1 m = 3.28 ft)
Answer (2)
1 m = 3.28 f t 1 mi = 5280 f t → 1 f t = 5280 1 mi 1 m = 3.28 × 5280 1 mi = 5280 3.28 mi = 528000 328 mi = 66000 41 mi 1 h = 3600 s → 1 s = 3600 1 h − − − − − − − − − − − − − − − − − − − − − − − − − 14 m / s = ( 14 × 66000 41 : 3600 1 ) m p h = ( 66000 574 × 3600 ) m p h = ( 55 574 × 3 ) m p h = 55 1722 m p h ≈ 31 m p h
A giraffe running at 14 m/s has a speed of approximately 31 miles per hour after converting the units from meters per second to miles per hour using appropriate conversion factors. The conversion involves changing meters to feet, then feet to miles, and finally seconds to hours. Thus, the final answer is 31 mph.
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