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Phy 231
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 = m * a So 12 * 3 = 4kg/ m/s^2
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12 has units, and 3 has units. They should be included at every step of the calculation.
The units of the calculation then follow from the calculation. The units are not kg / m/s^2.
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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 so 20/4 = 5m/s ^2
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You need units at every step of this calculation as well.
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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: ->->->->->->->->->->->-> :
not suer about this one
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If 20 Newtons was the net force on this object what would be its acceleration?
What is the net force on this object?
Consider your answers and see if you can answer the question as posed, as well as the question below.
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• What is the total of all those forces and in what direction does this total act?
answer/question/discussion: ->->->->->->->->->->->-> :
in the positive direction
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