Throwing a ridget
Description
HP-15C Owner's Handbook - Pages 181-184
Champion ridget hurler Chuck Fahr throws a ridget with an upward velocity of 50 meters/second. If the height of the ridget is expressed as
h = 5000(1 – e–t/20) – 200t
In this equation, h is the height in meters and t is the time in seconds. The desired solution is the positive value of t at which h = 0.
Program Resources
Labels
Program
| Line |
Display |
Key Sequence |
|
| 000 |
|
|
|
| 001 |
42,21,11 |
f LBL A |
|
| 002 |
2 |
2 |
|
| 003 |
0 |
0 |
|
| 004 |
10 |
÷ |
|
| 005 |
16 |
CHS |
|
| 006 |
12 |
eˣ |
|
| 007 |
16 |
CHS |
|
| 008 |
1 |
1 |
|
| 009 |
40 |
+ |
|
| 010 |
5 |
5 |
|
| 011 |
0 |
0 |
|
| 012 |
0 |
0 |
|
| 013 |
0 |
0 |
|
| 014 |
20 |
× |
|
| 015 |
34 |
x↔y |
|
| 016 |
2 |
2 |
|
| 017 |
0 |
0 |
|
| 018 |
0 |
0 |
|
| 019 |
20 |
× |
|
| 020 |
30 |
− |
|
| 021 |
43 32 |
g RTN |
|