The gravitational acceleration is now set to the value it has on the surface of Pluto.

Sets the gravitational acceleration to the value it has on the surface of Pluto.

The gravitational acceleration is now set to the value it has on the surface of Neptune.

Sets the gravitational acceleration to the value it has on the surface of Neptune.

The gravitational acceleration is now set to the value it has on the surface of Uranus.

Sets the gravitational acceleration to the value it has on the surface of Uranus.

The gravitational acceleration is now set to the value it has on the surface of Saturn.

Sets the gravitational acceleration to the value it has on the surface of Saturn.

The gravitational acceleration is now set to the value it has on the surface of Jupiter.

Sets the gravitational acceleration to the value it has on the surface of Jupiter.

The gravitational acceleration is now set to the value it has on the surface of Mars.

Sets the gravitational acceleration to the value it has on the surface of Mars.

The gravitational acceleration is now set to the value it has on the surface of Venus.

Sets the gravitational acceleration to the value it has on the surface of Venus.

The gravitational acceleration is now set to the value it has on the surface of Mercury.

Sets the gravitational acceleration to the value it has on the surface of Mercury.

The gravitational acceleration is now set to the value it has on the surface of the Moon.

Sets the gravitational acceleration to the value it has on the surface of the Moon.

The gravitational acceleration is now set to the value it has on the surface of the Earth.

Sets the gravitational acceleration to the value it has on the surface of the Earth.

Use this pop-menu to choose gravitational acceleration of a planet of the solar system.

Displays the graph of the mechanical energy, the kinetic energy, and the gravitational potential energy versus time, during the animation.  Checked because this option is activated now.

Displays the graph of the mechanical energy, the kinetic energy, and the gravitational potential energy versus time, during the animation.

Displays the graph of the vertical position component versus time, during the animation.  Checked because this option is activated now.

Displays the graph of the vertical position component versus time, during the animation.

Displays the graph of the horizontal position component versus time, during the animation.  Checked because this option is activated now.

Displays the graph of the horizontal position component versus time, during the animation.

Displays the graph of the vertical velocity component versus time, during the animation.  Checked because this option is activated now.

Displays the graph of the vertical velocity component versus time, during the animation.

Displays the graph of the horizontal velocity component versus time, during the animation.  Checked because this option is activated now.

Displays the graph of the horizontal velocity component versus time, during the animation.

Displays the graph of the vertical acceleration component versus time, during the animation. Checked because this option is activated now.

Displays the graph of the vertical acceleration component versus time, during the animation.

Displays the graph of the horizontal acceleration component versus time, during the animation. Checked because this option is activated now.

Displays the graph of the horizontal acceleration component versus time, during the animation.

Use this menu to display one or several of the graphs describing the motion during the animation.

Displays the position vector during the animation.  Checked because this option is activated now.

Displays the position vector during the animation.

Displays the Vertical velocity component during the animation. Checked because this option is activated now.

Displays the Vertical velocity component during the animation.

Displays the horizontal velocity component during the animation. Checked because this option is activated now.

Displays the horizontal velocity component during the animation.

Displays the velocity vector during the animation.  Checked because this option is activated now.

Displays the velocity vector during the animation.

Displays the acceleration vector during the animation.  Checked because this option is activated now.

Displays the acceleration vector during the animation.

Use this menu to display a graphical representation of the acceleration, velocity and position vectors.

Displays all distances in miles, velocities in miles per hour, and accelerations in miles per hour squared.  This choice of units is in use now.

Displays all distances in miles, velocities in miles per hour, and accelerations in miles per hour squared.

Displays all distances in miles, velocities in miles per minute, and accelerations in miles per minute squared.  This choice of units is in use now.

Displays all distances in miles, velocities in miles per minute, and accelerations in miles per minute squared.

Displays all distances in miles, velocities in miles per second, and accelerations in miles per second squared.  This choice of units is in use now.

Displays all distances in miles, velocities in miles per second, and accelerations in miles per second squared.

Displays all distances in feet, velocities in feet per hour, and accelerations in feet per hour squared.  This choice of units is in use now.

Displays all distances in feet, velocities in feet per hour, and accelerations in feet per hour squared.

Displays all distances in feet, velocities in feet per minute, and accelerations in feet per minute squared.  This choice of units is in use now.

Displays all distances in feet, velocities in feet per minute, and accelerations in feet per minute squared.

Displays all distances in feet, velocities in feet per second, and accelerations in feet per second squared. This choice of units is in use now.

Displays all distances in feet, velocities in feet per second, and accelerations in feet per second squared.

Displays all distances in inches, velocities in inches per hour, and accelerations in inches per hour squared. This choice of units is in use now.

Displays all distances in inches, velocities in inches per hour, and accelerations in inches per hour squared.

Displays all distances in inches, velocities in inches per minute, and accelerations in inches per minute squared..  This choice of units is in use now.

Displays all distances in inches, velocities in inches per minute, and accelerations in inches per minute squared.

Displays all distances in inches, velocities in inches per second, and accelerations in inches per second squared.  This choice of units is in use now.

Displays all distances in inches, velocities in inches per second, and accelerations in inches per second squared.

Displays all distances in kilometers, velocities in kilometers per hour, and accelerations in kilometers per hour squared.  This choice of units is in use now.

Displays all distances in kilometers, velocities in kilometers per hour, and accelerations in kilometers per hour squared.

Displays all distances in kilometers, velocities in kilometers per minute, and accelerations in kilometers per minute squared.  This choice of units is in use now.

Displays all distances in kilometers, velocities in kilometers per minute, and accelerations in kilometers per minute squared.

Displays all distances in kilometers, velocities in kilometers per second, and accelerations in kilometers per second squared.  This choice of units is in use now.

Displays all distances in kilometers, velocities in kilometers per second, and accelerations in kilometers per second squared.

Displays all distances in meters, velocities in meters per hour, and accelerations in meters per hour squared.  This choice of units is in use now.

Displays all distances in meters, velocities in meters per hour, and accelerations in meters per hour squared.

Displays all distances in meters, velocities in meters per minute, and accelerations in meters per minute squared.  This choice of units is in use now.

Displays all distances in meters, velocities in meters per minute, and accelerations in meters per minute squared.

Displays all distances in meters, velocities in meters per second, and accelerations in meters per second squared.  This choice of units is in use now.

Displays all distances in meters, velocities in meters per second, and accelerations in meters per second squared.

Displays all distances in centimeters, velocities in centimeters per hour, and accelerations in centimeters per hour squared.  This choice of units is in use now.

Displays all distances in centimeters, velocities in centimeters per hour, and accelerations in centimeters per hour squared.

Displays all distances in centimeters, velocities in centimeters per minute, and accelerations in centimeters per minute squared.  This choice of units is in use now.

Displays all distances in centimeters, velocities in centimeters per minute, and accelerations in centimeters per minute squared.

Displays all distances in centimeters, velocities in centimeters per second, and accelerations in centimeters per second squared.  This choice of units is in use now.

Displays all distances in centimeters, velocities in centimeters per second, and accelerations in centimeters per second squared.

Deactivates the slow motion option.  If you select this item, animations will be at normal speed.

Activates the slow motion option.  If you select this item, animations will be slower.

Deactivates the Auto Delete option.  If you select this item, the new trajectory is traced over the precedent trajectories. 

Activates the Auto Delete option.  If you select this item, only one trajectory is displayed at once in the animation window, the preceding trajectories being deleted automatically.

Allows you to choose units.

Displays or activates the gravitationnal acceleration dialog.

Displays or activates the initial conditions dialog.

Displays or activates the numerical results window.

Starts the animation.

Use this menu to start the animation, get informations about characteristics of the selected trajectory, set initial conditions, choose gravitationnal acceleration or units, select the auto delete option.

Deletes all trajectories already displayed in the animation window. Not available because there is no trajectory to delete.  

Deletes all trajectories already displayed in the animation window.

Removes the selected text or graphics without storing it on the Clipboard.  Not available now because nothing can be deleted in the current window.

Removes the selected text or graphics without storing it on the Clipboard.

Inserts the contents of the Clipboard at the location of the insertion point. Not available because there is nothing on the Clipboard that can be copied in the current window.

Inserts the contents of the Clipboard at the location of the insertion point.

Copies the selected text or graphics. The original selection remains where it is. The copy is placed temporarily into a storage area called the Clipboard. The command is not available now because nothing can be copied in the current window.

Copies the selected text or graphics.  The original selection remains where it is. The copy is placed temporarily into a storage area called the Clipboard.

Removes the selected text and places it temporarily into a storage area called the Clipboard.  Not available now because nothing is selected.

Removes the selected text and places it temporarily into a storage area called the Clipboard.

Use this menu to Cut, Copy, Paste, Delete.

Quits the YP Projectiles application.

Displays a dialog box in which you can specify the number of copies you want to print and other printing options.  Not available because the current window cannot be printed.

Displays a dialog box in which you can specify the number of copies you want to print and other printing options.

Displays a dialog box in which you can select paper size, orientation, and other printing options.  Not available because the current window cannot be printed.

Displays a dialog box in which you can select paper size, orientation, and other printing options.

Closes the current window.  Not available now because the current window can't be closed.

Closes the current window.

Displays a dialog box that allows you to save the contents of the active window as a PICT file.  Not available now because the contents of the current window can't be saved as a PICT file.

Displays a dialog box that allows you to save the contents of the current window as a PICT file.

Use this menu to save the contents of the current window as a PICT file, close the window, print the current window,  or quit the program.

Provides information about how to buy this software.

Click on this button to unlock you copy of the software, after having filled both of the text zones.

Type the name of the owner of the program here.

Paste here the unlocking code sent to you by the author after reception of your payment.

Click on this button to save the help text as a new text file.

Click on this button to print the help text.

Click on this button to unlock your copy of the software.

Click on this button to display online help.

Type here the title that you want to give to your graph or trajectory.  This title will be printed on paper. 

Click on this button to cancel printing.

Click on this button to pursue printing.

Type the gravitational acceleration here.

Type the vertical displacement component (vertical distance between the initial and final positions) here.

Type the orientation of the initial velocity of the projectile (in degrees) here.

Type the magnitude of the initial velocity of the projectile here.