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phy 121
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: ->->->->->->->->->->->-> :
Vave = 2m / .64 sec = 3.125m/s
a = 6.25 m/sec / .64 sec = 9.8 m/s^2 if using 2 sig figs
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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: ->->->->->->->->->->->-> :
Vave = 5m / 1.05 sec = 4.76 m/sec
a = 9.52 m/sec / 1.05 = 9.07 m/sec^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: ->->->->->->->->->->->-> :
Yes, The first observations seems very accurate and is consistent with the value of g
The second may have been a little less accurate in the measurments, but is still pretty close to the value of g
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&#Very good responses. Let me know if you have questions. &#