211 S '05 Assignments Set 1 Set 2 Set 3 Set 4 Set 5 Set 6 Set 7 Set 8 Set 9 Set 10 Set 11 Set 12 Set 13 Set 14

### Problem Set 1

Due date: 1/10 @ 4:30 pm

The goal of this problem set is to introduce you to some of the skills that a computer programmer, a computer analyst, a software salesperson, or a customer service person needs. The first three are word problems from seventh grade algebra that relate to traffic simulations, computer games, and basic business programs. The fourth one concerns geometry, which is needed to determine graphical layouts. The last one is about interacting with people, an extraordinarily important skill in our area.

Problem 1:

A girl picks up a paper route where she is paid 7 dollars a month for having the route and \$0.02 per paper she delivers.

How much does she get if she delivers 100 papers? 500 papers? 1000 papers? per month.

Make a table that shows the results.

Create a formula for calculating how much the girl earns if she delivers p papers.

Use the formula and a calculator or the Interactions Window to find out how much the girl earns when the Sox make the playoffs and win the series (again) and is forced to deliver 10023291 papers in a month.

Problem 2:

The space shuttle accelerates from 0 to 600 (miles per hour) in about 10 seconds like this:

 after t = 0 1 2 3 4 5 ... 10 ... 15 seconds it has traveled 0 30 120 270 480 750 ... ?? ... ?? meters

Create a formula for calculating how far the car has gotten in t seconds.

Use the formula and a calculator or DrScheme's Interactions Window to fill in the two boxes with ?? in the above table.

Problem 3:

To launch a rocket, we place it on a pedestal that's 20 meters tall. At t = 0, the engines ignite and the rocket lifts off. So,

secondsmeters
at t = 0 it is at 20
at t = 1 it is at 25
at t = 2 it is at 40
at t = 3 it is at 65
at t = 4 it is at 100

Where is the rocket at t = 5?

Write a formula that calculates how high the rocket is, given that t seconds have passed since the launch.

Use the program and a pocket calculator or the Interactions Window to find out how high it is at t = 10? t = 200? t = 400?

Problem 4:

Draw a hot air balloon floating over a mountain into a 100 x 100 box.

Draw a house betwee two trees into a 100 x 100 box.

Use graph paper to draw. Use only rectangles (incl. squares), equisided triangles, and circles. You may leave those blank or fill them in with color.

Problem 5:

Interview a classmate and find out his/her motivation for enrolling in computer science. Write up the result of the interview as a single paragraph (at most 150 words) that could go into a student newspaper. The paragraph should include some basic information about the person you interviewed.

Problem 6: [optional]

Submit your picture and description for the gallery.

Optional:

Please explain any problems you had completing this assignment in no more than 30 words.

 last updated on Wednesday, April 13th, 2005 3:57:37pm generated with PLT Scheme -- (Source)