Question

A model airplane flies18 feet in 2 seconds. What is the airplane's speed in miles per hour? Round your answer to the nearest hundredth.

Answer 1

`Formula\ for\ speed\\\\ v=(s)/(t)\\\\ s=18\ feet\\\\ t=2\ seconds\\\\ v=(18)/(2)=9(feet)/(second)\\\\ 1\ foot= 0.000189393939\ miles\\\\ 1\ second=(1)/(3600)hour\\\\ 9(feet)/(second)=9*(0.000189393939)/((1)/(3600))=6,156(mile)/(hour)\approx6,16(mile)/(hour)`