phy201
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: ->->->->->->->->->->->-> :
Fnet = 3m/s^2 * 12kg= 36N
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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: ->->->->->->->->->->->-> :
a=Fnet/m
a= 20 N/ 4kg= 5m/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: ->->->->->->->->->->->-> :
Since F= ma and we know the force is 20N, mass is 10 kg and acceleration is 1.5m/s^2 then we can check this using the equation. F in this instance should actually be equal to only 15N so we know there must be another force acting on the object to give a total force of 20 N.
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• What is the total of all those forces and in what direction does this total act?
answer/question/discussion: ->->->->->->->->->->->-> :
Fnet= 10kg * 1.5m/s ^2 + 20N = 35N in direction of motion
you have to be careful of positive and negative directions here
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15min
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Solution
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