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PHY 121
Your 'cq_1_05.1' 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 accelerates at 8 cm/s^2 for 3 seconds, starting with velocity 12 cm/s.
What will be its velocity after the 3 seconds has elapsed?
answer/question/discussion: ->->->->->->->->->->->-> n:
v_f = v_0 + a* `dt
= 12cm/sec + (8cm/sec^2 * 3sec)
= 12cm/sec + 24cm/sec)
=36cm/sec
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Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: ->->->->->->->->->->->-> n:
`ds = (v_0 + v_f)/2 * `dt
= (12cm/sec + 36cm/sec)/2 * 3sec
=24cm/sec * 3sec
=72cm
vAve = `ds/`dt
=72cm/3sec
=24cm/sec
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How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
`ds = vAve * `dt
24cm/sec * 3sec
=72cm
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&#Your work looks very good. Let me know if you have any questions. &#