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There are planes & there are planes

The flight of a projectile launched at an angle from the ground is depicted in two representations - - the path of the projectile in space - the height & downrange distance as functions of time [use the "compass" in the left panel to set the angle of the launch.] Explore how each element in the left panel is represented in the right panel and vice versa. What questions could/would you ask your students based on this applet?