Question
a model airplane flies 18 feet in 2 seconds. What is the airplane's speed in miles per hour?
Answers
Ms. Sue
It travels 9 feet per second.
9 * 60 * 60 = 32,400 feet per hour
To find the miles per hour, divide:
32,400 / 5,280 = ? miles per hour
9 * 60 * 60 = 32,400 feet per hour
To find the miles per hour, divide:
32,400 / 5,280 = ? miles per hour
bobpursley
long ago I memorized a conversion factor:
60mph=88fps
18/88=x/60 will do it.
60mph=88fps
18/88=x/60 will do it.
bobpursley
oops...
9/88=x/60 will do it.
9/88=x/60 will do it.
Ms. Sue
When I was a kid, my dad was appalled that I didn't know that 5,280 feet = 1 mile. Since we were on a long car trip, I had plenty of time to memorize that number. I still remember it after 60 years. <g>
Related Questions
a model airplane flies 18 feet in 2 seconds what is the airplanes speed in miles per hour round you...
a vehicle uses 1 tablespoon of gasoline to drive 125 yard how many miles can the vehicle travel per...
Tia was flying her model airplane. It took the airplane 5 seconds to go 90 feet. What was the averag...
A model airplane flies 18 feet in 2 seconds. what is the airplane's speed in miles per hour? round y...