A hot air balloonist rising vertically with a constant velocity of magnitude 5.0 m/s, releases a sandbag at an instant when the balloon is 40 m about the ground. After its released the sandbag is in free fall. a. Compute the position and velocity of the sandbag at .25 s and 1s after its release.
b. How many seconds will it take for the bag to hit the ground?
c. With what velocity magnitude does it strike the ground?
d. What is the greatest height above the ground that the sandbag reaches

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.