Phy 121
Your 'cq_1_21.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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The ball when it reaches its original position will be traveling faster. If air resistance is present then it would slow the ball down, because it is a force acting against the ball.
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10 minutes
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Good, but check the link for details (and be sure to remember to include a copy of the problem, as you usually do; the main reason being that it will then make more sense to you when if you later look at the posted document).
&#Please compare your solutions with the expanded discussion at the link
Solution
Self-critique your solutions, if this is necessary, according to the usual criteria. Insert any revisions, questions, etc. into a copy of this posted document. Mark any insertions with &&&& so they can be easily identified. &#