2.5. A person walks first at a constant speed of 5.00 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 3.00 m/s. What is (a) her average speed over the entire trip? (b) her average velocity over the entire trip?

5. A person walks first at a constant speed of 5.00 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 3.00 m/s. What is (a) her average speed over the entire trip? (b) her average velocity over the entire trip?
   |
   |
   |                  5m/s     
A|*----------------------------->*B
   | _________d_________
   |
   |
   | 0m---------------------------------------------------------------->+x
   |
   |                   3m/s
A|*<------------------------------*B
   | _________d__________
   |