course Phy 201
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:
`ds/`dt=aAve
2m/.64s=3.13m/s^2
You calculation does not give the specified units, and is not in any case the calculation that gives you the average 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?
answer/question/discussion:
5m/1.05s=4.8m/s^2
Are these observations consistent with the accepted value of the acceleration of gravity,
which is 9.8 m / s^2?
answer/question/discussion:
no
You might not calculating the average acceleration correctly. See also some of the preceding randomized problems, which illustrate the required reasoning process.
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