Question

A model airplane flies 18 feet in 2 seconds. what is the airplanes speed and miles per hour? round your answer to the nearest hundredth

Answer 1

Find out how many feet per second- 18 feet/2 sec = 9 feet per second Convert seconds to hours and get feet per hour. 60 seconds per minute * 60 minutes/hour = 3600 seconds/hour so the plane moves 9 feet/second * 3600 seconds/hour or 32400 feet/hour Convert feet to miles for the answer (32400 feet/hour) / 5280 feet/mile = 6.136 miles/hour

Answer 2

Speed, v = 2.743 m/s

Explanation:

Given that,

Distance covered by the airplane, d = 18 ft

Time taken by the airplane, t = 2 s

Speed of the airplane is calculated by finding the total distance and dividing it by total time taken. Mathematically, it is given by :

`v=(d)/(t)`

`v=(18\ ft)/(2\ s)`

v = 9 ft/s

Since, 1 foot/second = 0.3048 m/s

So, the speed of the model airplane is 2.743 m/s. Hence, this is the required solution.