Phy 121
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: ->->->->->->->->->->->-> :
F=ma
So to find out how much force is required to accelerate a 12 kg mass at 3 m/s^2 we would set up our problem as follows:
F= (12kg)(3m/s^2)
F= 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: ->->->->->->->->->->->-> :
To find out the acceleration of a 4kg mass object that is subject to a net force of 20 kg, we would set up our work as follows:
20 newtons =4 kg(a)
To get a on its own we need to divide each side by 4kg. This gives us a result of 5 m/s^2 as our acceleration.
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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: ->->->->->->->->->->->-> :
When we apply force on an object, we encounter resistance forces and friction from the object we are trying to push because each object acts upon one another.
That tends to be so, but these forces can in some situations be practically negligible.
Based on the given information, though, we can draw a conclusion. See the link at the end.
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• What is the total of all those forces and in what direction does this total act?
answer/question/discussion: ->->->->->->->->->->->-> :
If the object originally has a force of 20 newtons on it and it weighs 10kg 10 kg is not a weight, it is a mass; this is and will be an important distinction. Weight is the force exerted on a mass by gravity. Mass is not a force., then the force being pushed on it from the object is 10 newtons. So our total force is determined as follows a 20 Newtons + (-10 Newtons) = 10 newtons. The object moves in a positive direction.
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30 minutes
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You have a couple of goos solutions, and a couple of errors. You should clarify these ideas as soon as possible, so you should submit a revision.
&#Please compare your 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. &#