R=^'sincz'00), Kiïïwnbtauoabjhiiséiaiimifl – HP 48G User Manual
Page 102
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S t e p J f . -
View the five equations in the F'roject i le Mot ion set.
All five are used
interchangeably in order to solve for
missing
variables (see the next example).
E Q N
N X E Q
H X E Q
N x E Q N K E Q
S OF S Ï
R=^'SINCZ'00)
KiïïwnBtauoaBjHiiSÉiaiiMifl
S t e p 5 :
Examine the varial)les used by this equation set.
and as needed
^PROJECTILE MOTION^
x0: init x-position
x: t mal x-position
y0: init y-position
y: final y-position
B0: initial angle
o0: initial velocity t
Now try using this equation set to answer a question or two.
Example:
You estimate that an average professional goalkeepers can
punt a soccer ball a distance
( R )
of 65 meters downfield
at an elevation angle
( 9 g )
of 50 degrees. At what velocity
[
v q
)
do they kick it? How high is the ball halfway through
its flight? How far could they drop kick the ball if they
used the same kicking velocity, but changed the elevation
angle to 30 degrees? (Ignore the effects of drag on the
ball.)
S t e p 1 :
Start solving the problem.
PRDJECTILE MDTIDN^
4:
3=
2--
1:
nirdrinr~ïFirAnrW1l I
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