Final answer:
To convert 28 miles per hour to feet per second, multiply the speed in miles per hour by the conversion factor of 5280 feet per mile and divide by 60 minutes per hour and 60 seconds per minute. The speed in feet per second is approximately 10 feet per second.
Step-by-step explanation:
To convert 28 miles per hour to feet per second, we need to multiply the speed in miles per hour by the conversion factor of 5280 feet per mile and divide by 60 minutes per hour and 60 seconds per minute.
So, the calculation is: 28 miles/hour x (5280 feet/mile) / (60 minutes/hour x 60 seconds/minute) = 28 x 5280 / (60 x 60) = 36960 / 3600 = 10.2667 feet/second.
Rounding to the nearest whole number, the speed in feet per second is approximately 10 feet per second.