Posted by **ayana** on Sunday, April 28, 2013 at 1:36pm.

Four balls are taken to the top of a building. Ball 1 is dropped (zero initial velocity). Ball 2 is thrown straight up with a velocity of 3 m/s. Ball 3 is thrown straight out with a horizontal velocity of 3 m/s. Ball 4 is thrown straight down with a velocity of 3 m/s. Which ball hits the ground first?

- Physical Science -
**Elena**, Sunday, April 28, 2013 at 1:45pm
#4

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