Homework Help: physics

Posted by nanna on Sunday, February 5, 2012 at 9:39pm.

A rock is thrown down with an initial speed of 10.0 m/s from a bridge to the water below. It takes 2.75 s for the rock to hit the water.

Find the speed of the rock as it hits the water

physics - bobpursley, Sunday, February 5, 2012 at 10:54pm
vf=vi+gt
vf=10+9.8*2.75

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