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Phy 201
Your 'cq_1_07.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** CQ_1_07.1_labelMessages **
A ball falls freely from rest at a height of 2 meters. Observations indicate that the ball reaches the ground in .64 seconds.
• Based on this information what is its acceleration?
answer/question/discussion: ->->->->->->->->->->->-> :
v0 = 0
vAve = 3.125m/s
vf = 6.25m/s
‘dt = 0.64s
So… Acceleration = (6.25 - 0) / 0.64s = 9.77m/s^2
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• Is this consistent with an observation which concludes that a ball dropped from a height of 5 meters reaches the ground in 1.05 seconds?
answer/question/discussion: ->->->->->->->->->->->-> :
No, using the same formula as above I found the acceleration for this problem to be 9.07m/s^2
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• Are these observations consistent with the accepted value of the acceleration of gravity, which is 9.8 m / s^2?
answer/question/discussion: ->->->->->->->->->->->-> :
The first one is close, can be rounded, so Yes. The second one maybe I did something wrong, or maybe its just a type of trick questions. The answer isn’t terribly far off though, so it may be correct.
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Right. Depending on the accuracy of the experiment, 9.07 m/s^2 might be within the margin of uncertainty.
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&#Very good responses. Let me know if you have questions. &#