An alert hiker sees a boulder fall from the top of a
Chapter 2, Problem 2.98(choose chapter or problem)
An alert hiker sees a boulder fall from the top of a distant cliff and notes that it takes 1.30 s for the boulder to fall the last third of the way to the ground. You may ignore air resistance. 3.5 m>s, x = 0 5.0 m>s 0.170 m>s2 . 5.0 m>s ymax>2 (a) What is the height of the cliff in meters? (b) If in part (a) you get two solutions of a quadratic equation and you use one for your answer, what does the other solution represent?
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