Physics, 14.09.2019 10:30, aurorra

Alex climbs to the top of a tall tree while his friend gary waits on the ground below. alex throws down a ball at 8 m/s from 50 m above the ground at the same time gary throws a ball up. at what speed must gary throw a ball up in order for the two balls to cross paths 25 m above the ground? the starting height of the ball thrown upward is 1.5 m above the ground. ignore the effects of air resistance. whats the answer in m/s?

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Alex climbs to the top of a tall tree while his friend gary waits on the ground below. alex throws d...