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Momentum question
This is a question for my physics class I am stuck with.
"Bob is standing on a log and his friend is trying to knock him off by throwing a ball at him. Bob can catch the ball or let it bounce off of him. Which of the two is more likely to topple Bob: catching the ball or letting it bounce off?"
If he catches the ball, he could possibly dampen the blow by slowing its velocity. He can also control its impact area that way and therefore lessen the force of the ball in terms of force per area. However, if he stands still then his intertia is greater. So I can see either answer working.
Am I thinking too hard on this or is it some sort of trick question? I'm a physics noob and I can't think stuff like this out very well. Thoughts and comments and flames welcome :o)
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