A cyclist rides his bike at a speed of 18 miles per hour. What is this speed in feet per second?
18 mi/hr * 1hr/3600s * 5280ft/mi = 26.4 ft/s
Seems about right -- remember that 60 mi/hr = 88 ft/s
Sooo... Whats the final answer.
To convert the speed from miles per hour to feet per second, you need to use conversion factors. Here's how you do it:
Step 1: Convert miles to feet.
There are 5,280 feet in a mile. So to convert miles to feet, you multiply the number of miles by 5,280.
Distance in feet = 18 miles * 5,280 feet/mile
Step 2: Convert hours to seconds.
There are 3,600 seconds in an hour. So to convert hours to seconds, you multiply the number of hours by 3,600.
Time in seconds = 1 hour * 3,600 seconds/hour
Step 3: Calculate the speed in feet per second.
Now that you have the distance in feet and the time in seconds, you can divide the distance by the time to find the speed in feet per second.
Speed in feet per second = Distance in feet / Time in seconds
Putting it all together, the calculation looks like this:
Speed in feet per second = (18 miles * 5,280 feet/mile) / (1 hour * 3,600 seconds/hour)
After simplification, the result is:
Speed in feet per second = 7920 feet / 3600 seconds
Simplifying further, you get:
Speed in feet per second = 2.2 feet/second
Therefore, the cyclist's speed of 18 miles per hour is approximately 2.2 feet per second.