When do you need to speed?

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# The Speedy Recovery - PowerPoint PPT Presentation

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

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Presentation Transcript

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.”