• Puzzle solutions are due by 9:00 AM on Monday of each week.
  • Puzzles are worth 5 points of  credit each.
  • Answers must be accompanied by valid reasoning. Just like the tests, the answer alone isn't enough!
  • Each week, the first student to submit a correct answer will receive the stylish 152 T-shirt.
  • Previous winners get a "virtual t-shirt." No shirt, but a chance to win a prize with actual value at the end of the semester (often a book, or maybe software).
  • Please enter your solution in the text area at the bottom of this page. DON'T FORGET TO GIVE YOUR NAME!

"Ball Drop"


Hold a basketball in one hand, chest high. Hold a baseball in the other hand about two inches above the basketball. Drop them simulatneously onto a hard floor. The basketball will rebound and collide with the baseball above it. Estimate the rebound speed of the baseball? Assume that the basketball is three to four times heavier than the baseball.

The result will surprise you. Don't do this in the house!



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