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November 23, 2014

Homework Help: physics

Posted by fsfsf on Wednesday, March 2, 2011 at 11:20pm.

two students are on a balcony 20.6 m above the street. One student throws a ball vertically downward at 14.7 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. (Assume the positive direction is upward.)
(a) What is the difference in the time the balls spend in the air?
s

(b) What is the velocity of each ball as it strikes the ground?
ball thrown downward
m/s
ball thrown upward
m/s

(c) How far apart are the balls 0.800 s after they are thrown?

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