Mary walked north from her home to Sheila's home, which is 4.0 kilometers away. Then she turned right and walked another 3.0 kilometers to the supermarket, which is 5.0 kilometers from her own home. She walked the total distance in 1.5 hours. What were her average speed and average velocity?

Question

victoriasushchik · Answer

average speed can be determined by adding the distances and dividing by the time. 4+3/1.5=4.7km/h 

velocity has a direction, if we use the 5 as distance from home, divide by time we get 3.3km/h, however, 
it should be stated with a direction