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?
a = 2m/.64s = 3.125 m/s
This is not an acceleration. Your result doesn't have the units of acceleration, and you didn't apply the definition of acceleration.
• 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?
a = 5m/1.05s = 4.76 m/s
This is not an acceleration.
What is the definition of acceleration?
What is the average velocity in this situation?
What is the final velocity?
What is the change in velocity?
What is the change in clock time?
What therefore is the average rate of change of velocity with respect to clock time?
• Are these observations consistent with the accepted value of the acceleration of gravity, which is 9.8 m / s^2?
No, they are not consistent
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10 mins
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Some of these assignments are confusing me when it comes to velocities and acceleration. This is one of those assignments. I don't think that I did this assignment correctly.
You didn't do these problems correctly. I've inserted notes, which will hopefully clarify the situation and guide you to the correct application of the definitions. Naturally I'll be glad to provide further clarification if necessary.
&#Please see my notes and submit a copy of this document with revisions and/or questions, and mark your insertions with &&&&. &#