A teacher does the following:
i. walks 2 m, south
ii. walks 4 m, east
iii. walks 2 m, north
iv. walks 4 m, west.

The overall distance traveled by the teacher is _____.

In terms of their definitions, an essential difference between displacement and distance is that _____.

For any given motion, the distance is _____.

A football coach starts at the 50-yard line (A) and walks east to the 10-yard line (B). He turns around and walks to the 40-yard line (C). He turns around again and walks back to the 0-yard line (D). He turns around once more and walks back to the 30-yard line (E, thus completing his 10 minutes of pacing.
The couach's overall displacement is _____.

Grandma H challenges Michael Johnson in the 400-meter dash. Grandma H spins her wheelchair wheels five times and gives up 15 meters from the starting line. MJ makes a complete circle around the track and stops at the starting line. In this race, _____.

A football coach starts at the 10-yard line and walks east to the 40-yard line. He turns around and walks to the 0-yard line. He turns around again and walks back to the 50-yard line. He turns around once more and walks back to the 25-yard line, thus completing his 10 minutes of pacing.
The coach's overall distance is _____.

A teacher does the following:

i. walks 4 m, south
ii. walks 8 m, east
iii. walks 4 m, north
iv. walks 8 m, west.

The overall displacement of the teacher is _____.

For any given motion, displacement is _____.