A child throws a ball vertically upward to a friend on a balcony 28 m above him. The friend misses the ball on its upward flight but catches it as it is falling back to earth. If the friend catches the ball 3. 0 s after it is thrown, at what time did it pass him on its upward flight?.
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A child throws a ball vertically upward to a friend on a balcony 28 m above him. The friend misses t...
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