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^

2--

nirdrinr~ïFirAnrW1l I

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