**Goal:** Distinguish distance traveled from displacement

**Source:** CT151.2-1

Andy has the following series of displacements: 3 m to the right; 4 m to

the left; 5 m to the right; and 2 m to the left. What is his distance

traveled?

- 0
- 2 m
- 2 m (to the right)
- 2 m (to the left)
- 14 m (to the right)
- 8 m (to the right)
- Impossible to determine
- None of the above

## Commentary:

## Answer

(8) Students just learning about vectors and displacements are

inclined to over specify quantities. Before they knew anything about

vectors they used distance as a scalar but can become confused and give

it the direction of the total displacement.