Phy 121
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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: ->->->->->->->->->->->-> : v0=10cm/s vF=20cm/s ‘ds=45cm
• 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=3sec vF=50cm/s
• 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
Then for each situation answer the following:
• Is it possible from this information to directly determine vAve?
answer/question/discussion: ->->->->->->->->->->->-> : 1) Yes, 15cm/s 2) Yes, 35cm/s 3) No
• Is it possible to directly determine `dv?
answer/question/discussion: ->->->->->->->->->->->-> : 1) Yes, 10cm/s 2) 30cm/s 3) No
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20min
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&#Very good responses. Let me know if you have questions. &#