Question

Two baseballs are thrown off the top of a building that is 7.24 m high. Both are thrown with initial speed of 63.3 mph. Ball 1 is thrown horizontally, and ball 2 is thrown straight down. What is the difference in the speeds of the two balls when they touch the ground? (Neglect air resistance.)
vball 1 - vball 2 = 1
A ball is thrown upward from the ground with an initial speed of 26.8 m/s; at the same instant, a ball is dropped from a building 15.9 m high. After how long will the balls be at the same height?

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