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Example: Find the roots of the equation 2x2 + 12x — 20 = 0.
Keys:
Display:
Description:
B?value
Prompts for B.
12
J?value
Stores B, |, A, and C;
1
A?value
calculates X.
2 INPUT
C?value
20 [FL
%=1.3589
B?12.0000
Changes sign of ], cal-
J?1.0000
culates second root.
*/-|
INPUT
A?2.80008
C?-20.0000
R=-7.3589
Equations of Motion
The following equations of motion describe the displacement and ve-
locity of an object, assuming constant acceleration:
®=5+YxT +5xAXT~2
(Equation #1)
F=V+AXT
(Equation #2)
the acceleration.
the final velocity.
the initial position.
the elapsed time.
the initial velocity (at T = 0).
position at time T.
where
A
F
S
T
Vv
X
Example. Part 1: An object starting at rest accelerates with constant
acceleration of 2 meters/second? for 5 seconds. How far does the ob-
ject go?
94
7: The Equation Library
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