When do you need to speed? How can you tell if you’re going fast enough?
The Speedy Recovery Created by Holden
Saab 340 Flight in Trouble! • Mel, the mathematician, is on board the flight • Stewardess informs him: • Speed indicator is broken • Information is vital to avoid emergency landing in field • Is there any way to know: • How fast are we going? • Are we losing speed? • “I’ll find out,” answers Mel • How does he do it?
Step 1 • Outside the window he sees sections of land • He knows a section is a square mile, often bordered by roads
Possible points for reference Step 2 • He picks a point on the wing or window • He counts the seconds to go 1 mile • “One-thousand-one, one-thousand-two”, etc. for the count • He gets to “one-thousand-twelve”
He now knows they are traveling 1 mile in 12 seconds Or 2 miles in 24 sec Or 3 miles in 36 sec Or 4 miles in 48 sec Or 5 miles in 60 sec So they are going five miles in a minute There are 60 minutes in an hour Therefore, the plane is traveling 5 X 60 or 300 miles per hour Step 3
Cruising speed: 290 miles/hr Step 4 • Mel checks the flight magazine in the seat pocket • He sees that the cruising speed for a Saab 340 is 290 mph
Mel’s Response “There is no need to worry, ma’am. We are going a normal cruising speed of 300 miles an hour and not losing speed. There is no emergency.”