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GP Mathematics Puzzle

GP Mathematics Puzzle - 26 August

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

For Solution : Click Here

3 comments:

  1. If the initial height is 'H' then it will bounce 16H/81 after the 4th bounce...

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  2. 2/3rds raised to the 4th would be 16/81. roughly 1/5th the original height.

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  3. The ball is only dropped once. You said it CONTINUES to bounce back to 2/3 of the height from which it was DROPPED (not from the maximum height of the previous bounce). Therefore, after 4 bounces, it bounces back to 2/3 of the height from which it was originally dropped, and continues to bounce at this height presumably forever. Apparently thermodynamics is a weaker force than linguistics.

    -Anonymous Wizard

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