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Phy 201
Your 'cq_1_02.1' 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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Copy the problem below into a text editor or word processor.
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You should enter your answers using the text editor or word processor. You will then copy-and-paste it into the box below, and submit.
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The problem:
A ball starts with velocity 4 cm/sec and ends with a velocity of 10 cm/sec.
What is your best guess about the ball's average velocity?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
I would guess that the balls average velocity would be somewhere around 3 cm/s. My reasoning is that final minus the initial velocity over time at least 2 seconds.
The lowest velocity given is 4 cm/s. The average certainly wouldn't be 3 cm/s.
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Without further information, why is this just a guess?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
This is just a guess because we do not know the value for time period elapsed. Therefore, it is impossible to determine this accurately.
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If it takes 3 seconds to get from the first velocity to the second, then what is your best guess about how far it traveled during that time?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
2 cm
You need to apply the definition of rate of change to this situation.
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At what average rate did its velocity change with respect to clock time during this interval?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
6 cm/s / 3 s = 2 cm/s
Your units are incorrect. (cm/s) / s is not cm/s
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15 minutes
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9/11 2pm c021
See my notes. Give yourself up to 15 additional minutes to correct your solutions but don't let yourself get hung up longer than that. Submit the best revision you can within that time, and if you're not sure of your work, add questions telling me what you think you do and do not understand about the situation.