**PRINT THIS ANSWER SHEET TO FILL OUT AND TURN
IN.**
NAME_________________________________ CLASS____________________
DATE____________

## Lift/Velocity Worksheet

Data needed to continue is found at
http://en.wikipedia.org/wiki/Spirit_of_St._Louis

- Find "k" as above using the Spirit of St. Louis maximum
velocity and the takeoff weight less 20 kg (an arbitrary amount of
fuel to attain maximum velocity). Once you have determined k,
write an equation for velocity as a function of lift (as in our
example). V= __________.

- Using a function grapher, graph this equation (default window
settings are acceptable). Do you recognize the graph? It is a
______________.

- Now key in the following RANGE window values: xmin=1000,
xmax=2500, xscl=100, ymin=120, ymax=220, yscl=10, and graph the
equation. Because the domain and range are limited to real Spirit
of St. Louis values, the curvature of the parabola segment is
limited.

- Return to the equation and solve it for lift. L=
________________. Graph the equation. Then exchange the x and y
values in the RANGE window; that is, key in: xmin=120, xmax=220,
xscl=10, ymin=1000, ymax=2500, yscl=100, and graph. The parabola
segment now opens upwards, instead of to the side.