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Do as physics instructor Fred Cauthen does and place a
Chapter , Problem 27TAD(choose chapter or problem)
Do as physics instructor Fred Cauthen does and place a tennis ball close to and above the top of a basketball. Drop the balls together. If their vertical alignment nicely remains as they fall to the floor, you’ll see that the tennis ball bounces unusually high. Can you reconcile this with energy conservation?
Questions & Answers
QUESTION:
Do as physics instructor Fred Cauthen does and place a tennis ball close to and above the top of a basketball. Drop the balls together. If their vertical alignment nicely remains as they fall to the floor, you’ll see that the tennis ball bounces unusually high. Can you reconcile this with energy conservation?
ANSWER:Step 1 of 3
In this case we have a tennis ball close to and above the top of a basketball. Basketball has greater mass than a tennis ball, and because of that it goes faster than a tennis ball.Tennis ball hits the basketball, and they have an elastic collision.Because collision is elastic, energy is conserved, which means that total energy before collision is equal to total energy after the collision.