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A car is traveling in a straight line at a speed of 55 miles per hour. How fast is the car traveling in feet per second?
1 minute = 3.600 seconds
1 mile = 5,280 feet
Express the answer to the correct number of significant figures.

Sagot :

rspill6

Answer:

 80.67 feet/sec

Explanation:

Use conversion factors:

But the figure of 1 minute = 3.600 seconds cannot be correct.  The last time I checked, there were 60 seconds in a minute.  There are, however, 3600 seconds in an hour, so I'll use that if the question ever comes up again.

(55 miles/hour)*(5,280 feet/mile)*(1 hour/3600 seconds) = seconds)

 = 80.67 feet/sec

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