PHY 121
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The problem:
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: ->->->->->->->->->->->-> : 3s * 8cm/s^2 = 24cm/s. 12cm/s + 24cm/s = 36cm/s.
Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: ->->->->->->->->->->->-> : 12cm/s + 36cm/s = 48cm/s / 2 = 24cm/s vAve.
How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> : 24cm/s * 3s = 72cm.
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10 minutes.
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&#Very good responses. Let me know if you have questions. &#