posted by babidi .
A person walks first at a constant speed of 4.50 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.
(a) What is her average speed over the entire (b) What is her average velocity over the entire trip?
Let A to B be 100 miles, and B to A be 100 miles.
So what is the time
add the times to get total time