Physics homework help?

Posted on 2014-04-04 07:18:00 in Physics by SOPHIE

A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height of 31.0 m above sea level, directed at an angle above the horizontal with an unknown speed. The projectile remains in flight for 6.00 seconds and travels a distance of 171.0 m. Calculate the speed at which the rock is launched.



thanks in advance!

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