Atrack begins at 0 meters and has a total distance of 100 meters. juliet starts at the 10-meter mark while practicing for a race.
after running 45 meters, how far is she from the beginning of the track?
10 meters
35 meters
45 meters
55 meters

55 meters. If she started at 10 meters and ran 45 more, 10+45=55.

Where is the diagram? you need to be more specific in your question so we can you

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.