Phy 231
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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: ->->->->->->->->->->->-> :
36cm/s I came to this by it gains 8cm/s by the sec so 3 secs later is 24cm/s + the 12cm/s already is 36cm/s.
#$&*
• Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
24cm/s added both together and divided by 2.
#$&*
• How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
72 cm found by multiplying 24cm/s by 3s.
#$&*
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15min
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6/14 830
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Then please compare your solutions with the expanded discussion at the link
Solution
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