Projectile motion

Angle is measured from the horizontal; negative angles launch downward. Constant gravity acts vertically, with no air resistance, Earth curvature or change of gravity with height. Contact with the ground ends the trajectory. For a downward launch, the greatest height is the initial height. Exact vertical throws have zero range.

The plot uses equal horizontal and vertical metre scales. Start, the highest point (when reached after launch) and landing are marked. Components are signed; landing speed is a magnitude. Very large ranges are mathematical results of this ideal model, not realistic terrestrial predictions.

Move Time in flight to inspect the position along the trajectory. The orange ring marks that position; the adjacent value is elapsed time. Marker tooltips identify launch, apex and landing. Input edits reset the probe to zero. Exact input texts, including invalid or incomplete drafts, are kept locally; the probe and computed flight are never stored. Reset restores default inputs.