cq_1_061

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Phy 121

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: ->->->->->->->->->->->-> :

Given:

V0 = 10cm/s

Vf= 20cm/s

`ds = 45cm

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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

Vf = 50cm/s

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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

V0 =0cm/s

A = 20cm/s^2

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Then for each situation answer the following:

• Is it possible from this information to directly determine vAve?

answer/question/discussion: ->->->->->->->->->->->-> :

For the first two, you can determine vAve, but not for the third set.

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• Is it possible to directly determine `dv?

answer/question/discussion: ->->->->->->->->->->->-> :

Again, you can determine `dv in the first two but not for the third.

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&#Very good responses. Let me know if you have questions. &#