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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.
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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 = m*a
Net force = mass*acceleration
m = 12 kg, a = 3 m/s^2
Fnet = (12 kg)*(3 m/s^2)
Fnet = 36 kg*m/s^2 = 36 N
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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: ->->->->->->->->->->->-> :
Fnet = m*a
Net force = mass*acceleration
Fnet = 20 N, m = 4 kg
a = Fnet / m
a = 20N / 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: ->->->->->->->->->->->-> :
F = m*a
m = 10 kg, a = 1.5 m/s^2
m*a = (10 kg)*(1.5 m/s^2) = 15 N
There is a 5 N force difference which means that there must be other forces involved in the situation.
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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 all the forces is 20 N. This total act is in the direction of your force.
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About 15 minutes
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&#Very good responses. Let me know if you have questions. &#