Displacement and Velocity

Question

Anthony walks to the pizza place for lunch. He walk 1 km east, then 1 km south and then 1 km east again. What distance did he cover? What was his displacement?

 

 

Answer 1

Distance is the length of the path that Anthony actually walked (as recorded on his Fitbit):

Distance = 1 km east + 1 km south + 1 km east = 3 km

Displacement is the length of the straight line connecting his starting and ending points, which you can find using the Pythagorean Theorem.

Displacement = √(1²+2²) = ____?