# An object travels North at # 8 m/s# for #3 s# and then travels South at # 7 m/s# for # 4 s#. What are the object's average speed and velocity?

##### 1 Answer

Nov 24, 2016

#### Answer:

0,57 m/s

#### Explanation:

You must calculate the actual distance from the initial and final points ( 4m South = 7m/s x 4s South - 8mM/s X 3s North ), the total time needed (3+4 =7 s) and calculate the average speed by dividing space and time (4m)/(7m/s) = 0,57 m/s