A tennis player wants to slam a serve at O so that the ball lands just inside the opposite corner of the court. What should the ratio 
be for the initial velocity 
? The time t = 0 is the time when the ball is hit by the racket. 
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The degree to which partners in a relationship experience satisfaction, happiness, and longevity together.
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The degree to which a person's physical features are considered aesthetically pleasing or beautiful.
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