A delivery truck travels 20 blocks north, 15 blocks east and 18 blocks south. What is its final displacement from the origin? Assume the blocks are equal length.

Answer 1

It is 53 blocks. (supposing that's what you meant!)

Answer 2

Displacement=sqrt{(20-18)^2 +15^2}=15.13 m

Answer 3

I like the 15.13, but where did you come up with meters? :-)