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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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Seed Question 11.1
You should enter your answers using the text editor or word processor. You will then copy-and-paste it into the box below, and submit.
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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_net = m * a
F_net = 12 kg * 3 m/s^2
F_net = 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: ->->->->->->->->->->->-> :
F_net = m * a
a = F_net / m
a = 20 Newtons / 4 kg
a = 5 m/s^2
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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: ->->->->->->->->->->->-> :
There is friction acting on the object in the opposite direction.
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@& You don't know this to be the case, and even if you know there is some friction you can't assume it explains the entire discrepancy.
However you can conclude from the given data alone that there are forces acting besides the one you are exerting?*@
• What is the total of all those forces and in what direction does this total act?
answer/question/discussion: ->->->->->->->->->->->-> :
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@& What would be the acceleration of the object if the only force exerted on it was your 20 N force? How does the given information imply that at least one additional force is acting?*@