A jogger runs north 6 km, 5 km east, and 4 km north again. Time is 1.9 hr. What is average velocity?

Average velocity = 5.9 km/ hr (or 1.64 m/s).

Explanation:

Velocity =

It is a vector quantity and has an SI unit of m/s.

Displacement =

x = 5 km east

y = 6 km north + 4 km north

  = 10 km north

So that,

Displacement =

                       =

                       =

                       = 11.1803

Displacement = 11.18 km = 11180 m

Time = 1.9 hr = 6840 seconds

Average velocity =

             = 5.8842

Average velocity = 5.9 km/ hr

The average velocity is 5.9 km/ hr (or 1.64 m/s).

answer and explanation;

answer: a. same unit

explanation: