Sprint 13 · Chapter 2

Point Objects, Position And Displacement

Decide when a moving body can be treated as a point, choose an origin and a positive direction, and tell displacement from path length.

1. 1When Is a Train a Dot?
2. 2Four Motions: Point or Not?
3. 3Exercise 2.1: Point or Not?
4. 4Origin, Sign and Displacement
5. 5Displacement vs Path, Worked
6. 6Your Turn: The Signed Walk
7. 7Explain the Distance Difference