Texas Instruments TI-89 Titanium

Previews 83
Ignoring air resistance and other drag forces, what is the maximum height of the ball and
when does it hit the ground?
Steps and keystrokes Display
1. Display the MODE dialog box. For Graph
mode, select
PARAMETRIC.
Press 3 B 2 ¸
2. Display and clear the
Y= Editor. Then
define the horizontal component
xt1(t) = v
0
t cos q.
Enter values for v
0
and q.
@8 # , 8 ¸ ¸ 15T p
2 X 60 2 “ d ¸
Type T p 2 X, not T 2 X.
Enter a ¡ symbol by typing either 2“
or 2I2 1. This ensures a number
is interpreted as degrees, regardless of
the angle mode.
3. Define the vertical component
yt1(t) = v
0
tsinqN(g/2)t
2
.
Enter values for v
0
, q, and g.
@¸ 15T p 2 W 60 2 “ d
| c 9.8 e 2 d T Z 2 ¸
xt1(t)=15t…cos(60¡)