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Phy 201
Your 'cq_1_08.2' 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 upward at 15 meters / second from a height of 12 meters above the ground. Assume a uniform downward acceleration of
10 m/s^2 (an approximation within 2% of the 9.8 m/s^2 acceleration of gravity).
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How high does it rise and how long does it take to get to its highest point?
answer/question/discussion: ->->->->->->->->->->->-> discussion:
15m/s -10m/s/s *1.5sec= 0m/s it takes 1.5seconds (15m/s+0m/s)/2= 7.5m/s * 1.5= 11m. I'm not sure if this is the highest
point. It's the best guess I could come up with through my reasoning.
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How fast is it then going when it hits the ground, and how long after the initial toss does it first strike the ground?
answer/question/discussion: ->->->->->->->->->->->-> discussion:
If it's highest point is 11m and it started 12m above ground it would have to go 23m before hitting the ground. I'm not exactly sure yet
how to answer the rest of the question.
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At what clock time(s) will the speed of the ball be 5 meters / second?
answer/question/discussion: ->->->->->->->->->->->-> discussion:
15m/s -10m/s/s= 5m/s in 1 second, then again in 2seconds
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At what clock time(s) will the ball be 20 meters above the ground?
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How high will it be at the end of the sixth second?
answer/question/discussion: ->->->->->->->->->->->-> discussion:
I'm not sure yet how to get to this answer
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15 minutes
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&#See any notes I might have inserted into your document, and before looking at the link below see if you can modify your solutions. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your old and new 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.If your solution is completely consistent with the given solution, you need do nothing further with this problem. &#
@& You're doing well here. Check the discussion at the link. No need for a revision if you understand.*@