Episode Details

We're going to solve this case. To do it, we need to learn to read one kind of motion graph, then catch the detective nearly arresting the wrong person because she read the second one the same way.

The case is solved by one habit: read the up-axis before the line. The listener leaves able to say speed = distance/time (m/s) and acceleration = change in speed/time (m/s²), and to explain why a flat line means opposite things on the two graphs.

Sources:

• https://www.olympics.com/en/news/usain-bolt-record-world-champion-athlete-fastest-man-olympics-sprinter-100m-200m
• https://www.britannica.com/story/how-fast-is-the-worlds-fastest-human

Source: Episode 2 - Physics Level 8, Motion Graphs (2/17)
Style: Exam prep
Length: 1153 words, 7 min target
Generated: 2026-10-25