3. A tennis player wins a match at Arthur Ashe stadium and hits a ball into the stands at 30 m/s and at an angle 45 above the horizontal (see below). On its way down, the ball is
caught by a spectator 10 m above the point where the ball was hit.
(a) Calculate the time it takes the tennis ball to reach the spectator.
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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.

Global warming was a major concern some people do not care global warming is fake it is not real the percentage of it happening  is slight 

Sorry i don’t know what to do