Thursday

January 29, 2015

January 29, 2015

Posted by **David** on Tuesday, January 11, 2011 at 6:00pm.

on a catapult decide to have a water balloon

fight in the school hallway. The ceiling is of

height 3.2 m, and the balloons are launched

at a velocity of 12 m/s.

The acceleration of gravity is 9.8 m/s2 .

At what angle must they be launched to

just graze the ceiling?

Answer in units of .

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