## Wednesday, November 9, 2011

### Shane's Textbook Question

Chapter 2.2 no. 22

An aircraft was flying at the altitude of 2950 m. It descended for 3 minutes at 2.5 m/s and then descended for 2.5 minutes at 2.8 m/s. What was the planes altitude after the descent.

The altitude of the plane is 2950 m.
It descended for 3 minutes at a rate of 2.5m/s
3 minutes = 180 secs at a rate of 2.5m/s
180 x 2.5 = 450 m

It then descended another 2.5 minutes for 2.8m/s
2.5 minutes = 150 secs at a rate of 2.8 m/s
150 x 2.8 = 420 m

2950
-  450
420
2080 m
The plane's altitude after the descent is 2080 metres.

#### 6 comments:

1. Great job Shane. The post was easy to understand, but I felt that it could have been organized a bit better. I thought everything was crowded into paragraphs and you could have numbered things to know which part of the question we were on.

2. Nice job Shane. It was a bit unorganized because your questions weren't numbered. But I managed to read through it.

3. Good job Shane! I liked how your post was easy to understand. I think you should have spaced out your work a little bit to make it easier to read. Good job!!!

4. Good Job Shane! I like how your post is easy to understand. You have a lot of pictures there which is good. Keep it up

5. Great Job Shane! Your information is very clear and easy to read. Next time you should put pictures and make the important words stand out. Also you should space it out a bit more. Keep up the good work!

6. Good post Shane ! The words really stood out, but it really wasn't as organized as it could of been, also making some words stand out always helps.