A bowling ball and a beach ball are both at rest on a 3rd story balcony. The bowling ball has more mass than the beach ball. What can be said about their energies? They have the same amount of GPE because they are the same height
The beach ball has more GPE because it has less mass
The bowling ball has more GPE because it has more mass
Neither ball has any GPE because they are not moving

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.