2008 AMC 8 Problems/Problem 12
Problem
A ball is dropped from a height of 
meters. On its first bounce it rises to a height of 
meters. It keeps falling and bouncing to 
of the height it reached in the previous bounce. On which bounce will it not rise to a height of 
meters?
Solution
Each bounce is 
times the height of the previous bounce. The first bounce reaches meters, the second 
, the third 
, the fourth 
, and the fifth 
. Half of 
is 
, so the ball does not reach the required height on bounce 
.
See Also
| 2008 AMC 8 (Problems • Answer Key • Resources) | ||
| Preceded by Problem 11 |
Followed by Problem 13 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| All AJHSME/AMC 8 Problems and Solutions | ||
