phy121
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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A ball is tossed vertically upward and caught at the position from which it was released.
Ignoring air resistance will the ball at the instant it reaches its original position be traveling faster, slower, or at the same speed as it was when released?
The ball will be traveling at the same speed. This is because the KE lost in upward travel, will be re-gained in downward travel.
What, if anything, is different in your answer if air resistance is present? Give your best explanation.
The ball will be traveling slower. This will be due to KE spent on the air resistance on the way up, and down. A loss in both directions will slow the ball.
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&#Very good work. Let me know if you have questions. &#