Your 'cq_1_7.1' 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 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?
‘dt = .64s ‘ds = 2m vAve = 3.125m/s v0=0 vf=6.25m/s ‘dv=6.25m/s
aAve=6.25m/s / .64s = 9.8m/s^2
answer/question/discussion:
• 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?
‘dt = 1.05s ‘ds = 5m vAve=5.25m/s v0=0m/s vf=10.5m/s ‘dv = 10.5m/s
aAve = 10.5m/s / 1.05s = 10m/s^2 the 2 are slightly different
answer/question/discussion:
• Are these observations consistent with the accepted value of the acceleration of gravity, which is 9.8 m / s^2?
yes
answer/question/discussion:
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15 mins
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Would like to have feedback. Thanks, Joshua
&#Your work looks very good. Let me know if you have any questions. &#