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!
"KINETIC ENERGY"
Bill is riding in a railroad car, throwing a ball against the car wall. The train is moving at 20 m/s to the right. Bill is throwing the ball at 8 m/s to the left. According to Bill, his 0.145 kg baseball has 4.64 joules of kinetic energy. His brother is standing on the ground disagreeing. According to him the baseball has 10.44 joules of kinetic energy.
Who is right?
Please type LAST name:
Please type your LAST NAME and LAST FOUR SS# digits (eg: Smith3256):
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