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Phy 201
Your 'cq_1_06.1' 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_06.1_labelMessages **
For each situation state which of the five quantities v0, vf, `ds, `dt and a are given, and give the value of each.
A ball accelerates uniformly from 10 cm/s to 20 cm/s while traveling 45 cm.
answer/question/discussion: ->->->->->->->->->->->-> : v_0 = 10cm/s, v_f = 20cm/s, 'ds = 45cm. Yes, you can find vAve by adding the inital and final velocities and dividing by 2. Yes, you can
also easily determine 'dv by subtracting v_0 from v_f.
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A ball accelerates uniformly at 10 cm/s^2 for 3 seconds, and at the end of this interval is moving at 50 cm/s.
answer/question/discussion: ->->->->->->->->->->->-> : a = 10cm/s^2, 'dt = 3s, v_f = 50cm/s. Yes you can find vAve by using the following equation to solve for v_0. 10cm/s^2 = (50m/s - v_0)/3s.
Once I have initial and final velocities I can solve for vAve. Yes, you can directly determine 'dv by the equation 'dv = a*'dt.
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A ball travels 30 cm along an incline, starting from rest, while accelerating at 20 cm/s^2.
answer/question/discussion: ->->->->->->->->->->->-> : 'ds = 30cm, v_0 = 0cm/s, a = 20cm/s^2. Yes, you can solve for vAve by using the v_f^2 = v_0^2 +2a*'ds to solve for v_f. Then averaging v_0
and v_f to find vAve. You can determine 'dv, but may have to go through 2 or more steps to find it. For example, once we found v_f, we can subtract v_0 from it to find
'dv.
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Then for each situation answer the following:
Is it possible from this information to directly determine vAve?
answer/question/discussion: ->->->->->->->->->->->-> : This is answered under each question.
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Is it possible to directly determine `dv?
answer/question/discussion: ->->->->->->->->->->->-> : This is answered under each question.
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&#Good responses. Let me know if you have questions. &#