AlgebraDifficulty 3.0AMC 10/12Find the answerUnited Kingdom
A rubber ball falls from the roof of a house of height 10 m. Each time it hits the ground, it rebounds to four-fifths of the height it fell from previously. How many times will the ball appear in front of a 1 m high window whose bottom edge is 5 m above the ground?
(A) 1 (B) 2 (C) 4 (D) 6 (E) 8
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