Mistake Master
Mistake Master · AP Precalculus · Unit 4 · Step-Through Animation
Two Throttles, One Moving Point
You'll learnto track an object's motion by its horizontal and vertical positions separately.
A moving point runs on two dials: one sets how far across it goes, the other how far up, and one clock drives both. Read them apart and the puzzles dissolve, because at the top of a thrown ball only the climb has stopped. Twelve short steps; press Next for each one.
Unit 4 is not assessed on the AP exam; schools include it where local requirements ask.
two dials, one clock · the arrowheads are the direction of travel
Before you start
What you're looking at
A moving object shown twice: the path it traces, and its two coordinates plotted against one clock.
The question
At this instant, what is each coordinate doing on its own?