# An object travels North at #8# #ms^-1# for #9# #s# and then travels South at #5# #ms^-1# for #3# #s#. What are the object's average speed and velocity?

##### 1 Answer

Jul 10, 2017

#### Answer:

Average speed =

Average velocity =

#### Explanation:

Distance traveled North:

Distance traveled South:

Total distance traveled:

Total time:

Average speed =

If we take North as the positive direction, total displacement:

This is the distance of the object from its starting point, and includes a direction.

Average velocity =