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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.
** CQ_1_11.1_labelMessages **
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 = 12g * 3m/s^2 = 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: ->->->->->->->->->->->-> :
a = 20 kg m/s^2 / 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: ->->->->->->->->->->->-> :
Fnet = m * a
10kg * 1.5m/s^2 ≠ 20 Newtons, so there must be another force acting on the system, or the arithmetic is wrong.
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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 those forces must be: 10kg * 1.5m/s^2 = 15 Newtons, 20 Newtons - 15 Newtons = 5 Newtons in the positive direction
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&#Very good responses. Let me know if you have questions. &#