Asked by sheila
a rubber ball has the property that on any bounce it returns to 1/3 of the height from which it just fell. Suppose the ball is dropped from 108 ft How far has the ball traveled by the fourth bounce?
Answers
Answered by
Reiny
end of first bounce it dropped 108 ft
during the second bounce it went up and down
(1/3) of 108 or 2(1/3)(108) = 72
during the third bounce it went
2(1/3)(72) = 48
during the fourth bounce it went
2(1/3)(48) = 32
so after 4 bounces it went
108+72+48+32 = 260
make a sketch, label the bounces and see why I only took half of the first bounce cylcle
during the second bounce it went up and down
(1/3) of 108 or 2(1/3)(108) = 72
during the third bounce it went
2(1/3)(72) = 48
during the fourth bounce it went
2(1/3)(48) = 32
so after 4 bounces it went
108+72+48+32 = 260
make a sketch, label the bounces and see why I only took half of the first bounce cylcle
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