For this problem, you want to make conversions from meters to feet and hours to seconds. So, you start out with 5 miles/ hour, and you divide by a unit factor of 5280 feet / miles, getting 5*5280 feet/ hour. Then, you multiply by a unit factor of 1 hour / 60*60 seconds, getting 5*5280/360 feet/second. Simplify, and your final answer is
73.33.