08 · One Rider, Two Records · 90s Motion Sing-Along

[Verse 1] A rider sits as a cart rolls right; The ground-frame watcher keeps it in sight. At zero seconds, mark the start. Now watch the rider riding the cart. [Chorus] Zero, four, eight—meters from the start! Zero, zero, zero—from the seat inside the cart! Same rider, same seconds, same little ride: Two reference frames, written side by side! [Verse 2] At one second, four meters right; At two seconds, eight comes into sight. But measured from the seat, the rider stays: Zero in the cart through every phase! [Bridge] Four meters each second compared with the ground; Compared with the seat, no change is found. Before you compare what the numbers proclaim, Look at the heading and name the frame! [Final Chorus] Zero, four, eight—meters from the start! Zero, zero, zero—from the seat inside the cart! Same rider, same seconds, same little ride: Two reference frames, written side by side!