Question

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.

Answer 1

80.67 feet/sec

Step-by-step 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