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A boy projects a ball vertically upwards with velocity v from the top of a building where it rises and then it falls down to hit the ground with velocity 2v. So, the total distance covered by the ball is .... (g = 10 m/s)
v is the max speed it can go if you droped a egg and a watermelon off a roof 20ft high thay would hit the ground at the same time becuse gravaty will effect them qualy. if you drop them from a jet liner 20,000 ft up thay will hit max.v. wich depends on mass so thay will hit at differnt times.
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