[Verse 1] Draw two columns, put the frames at the top: Ground on the left, cart on the right. Rider stays seated while the cart rolls right; Watch how the numbers describe that ride. Ground zero marks where the rider began; Cart zero stays at the seat in the plan. Right is positive, seconds keep ticking; Now we can track how position is shifting. [Hook] Zero, four, eight— That’s the ground-frame record. Zero, zero, zero— In the cart, no change measured. One rider, two columns, One trip on the page. Different comparisons, Different position changes. [Verse 2] At zero seconds, zero in both. One second later, the ground column shows Four meters right from the starting location; The cart column’s zero—same seat, same position. At two seconds, eight meters right from the start; Still zero compared with the seat in the cart. Eight over two gives four meters each second, Relative to ground—keep the frame with the measurement. [Bridge] Zero in the cart doesn’t mean no trip. It means no position change compared with it. The rider didn’t switch to a different event; We switched what the position was measured against. [Final Hook] Zero, four, eight— That’s the ground-frame record. Zero, zero, zero— In the cart, no change measured. One rider, two columns, One trip on the page. Different comparisons, Different position changes.
