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PHY 201
Your 'cq_1_11.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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Answer the following based on Newton's Second Law:
How much net force is required to accelerate a 12 kg
mass at 3 m/s^2?
answer/question/discussion: ->->->->->->->->->->->-> :
12 kg (3 m/s/s) = 36 Newtons
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What would be the acceleration of a 4 kg mass subject
to a net force of 20 Newtons?
answer/question/discussion: ->->->->->->->->->->->-> :
20 Newtons / 4 kg = 5 m/s/s
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If you exert a force of 20 Newtons on a 10-kg object
and it accelerates in the direction of your force at
1.5 m/s^2, then how do you know there are other forces
acting on the object besides your own?
answer/question/discussion: ->->->->->->->->->->->-> :
A force of 20 Newtons on a 10 kg object would produce
an acceleration of 10 m/s/s. There must be some other
force acting upon the object.
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What is the total of all those forces and in what
direction does this total act?
answer/question/discussion: ->->->->->->->->->->->-> :
The total of all forces would be 15 Newtons in the
direction of my force. If the object should be
accelerating at 10 m/s/s and it is only accelerating
at 1.5 m/s/s there is a force or forces acting upon
the object that counteract this acceleration. Since
the object is still moving in the direction of my
force I assume the 20 Newton force is enough to
overcome the other forces. Since I have a total
acceleration of 1.5 m/s/s and the mass of the object
is unchanged I can say the total force is 1.5 m/s/s *
10 kg or 15 Newtons.
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30 minutes
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@& Revision is needed only if you have questions.
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&#See any notes I might have inserted into your document, and before looking at the link below see if you can modify your solutions. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your old and new solutions with the expanded discussion at the link
Solution
Self-critique your solutions, if this is necessary, according to the usual criteria. Insert any revisions, questions, etc. into a copy of this posted document. Mark any insertions with &&&& so they can be easily identified.If your solution is completely consistent with the given solution, you need do nothing further with this problem. &#
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