Homework Help: math

Posted by Jessica on Saturday, April 14, 2007 at 10:44am.

A stone was dropped off a cliff and hit the ground with a speed of 160 ft/s. What is the height of the cliff?

Take the free fall acceleration to be 32ft/s^2

h= _______ft?

vfinal^2= 2gh you are given g, and vfinal.

A stone was dropped off a cliff and hit the ground with a speed of 160 ft/s. What is the height of the cliff?

Take the free fall acceleration to be 32ft/s^2

From Vf^2 = Vo^2 + 2gh,

160^2 = 0 + 2(32)h ---> h = 20 feet.

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