STATE OF THE ARCEarth range prelab

Before this prelab: individual Do Now · After this prelab: independent launch & reflection →

LEVEL REFERENCE COURSE

One flight. One clock.

EARTH
g = 9.8 m/s²

Stationary launcher · equal elevations · no wind or drag

Same time, another view

t = 0.00 s

Observed motion table
t (s)x (m)y (m)vx (m/s)vy (m/s)

Explain what the model means

Questions P1–P6 match worksheet pages 3–5. Preserve your first answer; corrections are separate. Paper responses stay on paper.

Derive, observe, explain

Record a trial prediction before revealing equations or playing. Reveal one equality at a time; stages are freely selectable. Record P4 before revealing the doubled-speed relationship. Paper acknowledgments record your choice, not an answer or a score.

Every graph uses the same simulation clock. Playback speed changes viewing speed only. To apex animates to vy = 0; acceleration remains downward. The slider inspects only observed time. Help, response entry and browser interruptions pause the animation.

The range shortcut applies only under these assumptions. P5 and P6 identify equations to revisit; this prelab does not run those extensions. The supplied double-angle identity does not require prior memorization.