Two students are on a balcony 19.5 m above the street. One student throws a ball vertically downward at 16.6 m/s; at the same instant the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) What is the difference in their time in air? (b) What is the velocity of each ball as it strikes the ground? (c) How far apart are the balls 0.900 s after they are thrown?

Two students are on a balcony 19.5 m above the street. One student throws a ball vertically downward at 16.6 m/s; at the same instant the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way down. (a) What is the difference in their time in air? (b) What is the velocity of each ball as it strikes the ground? (c) How far apart are the balls 0.900 s after they are thrown?

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