Question 746910: a rock 80m up the face of a cliff breaks loose about how long does it take the rock to fall to the ground?
the formula is
-5t2+vot+c=h Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! a rock 80m up the face of a cliff breaks loose about how long does it take the rock to fall to the ground?
the formula is
-5t2+vot+c=h
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s = at^2/2
80 = 10t^2/2
t = 4 seconds
