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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Seed question 11
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: ->->->->->->->->->->->-> :
m= 12kg
a=3 m/s^2
F= m * a
F= 12kg * 3 M/s^2
Fnet = 36newtons (kg m/s^2)
#$&*
What would be the acceleration of a 4 kg mass subject to a net force of 20 Newtons?
answer/question/discussion: ->->->->->->->->->->->-> :
Fnet = m * a
f= 20newtons
m = 4 kg
20newtons = 4 kg * a
a= 5m/s^2
#$&*
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= 20 newtons
m=10kg
a=1.5m/s^2
F=m * a
F= 10kg * 1.5 m/s^2
f=15 newtons
20newtons= 10kg + a
a= 2 m/s^2
You know that there are forces besides you own because if you are exerting a force of 20 newtons on an onject with a mass of 10kg the
acclereation should be 2m/s^2. But this object is going 1.5m/s^2 which is much faster. When calculated an object with a mass of 10kg only
needs a force of 15 newtons to accelerate at 1.5 m/s^2.
#$&*
What is the total of all those forces and in what direction does this total act?
answer/question/discussion: ->->->->->->->->->->->-> :
Fnet is 15 newtons of plus an additional 5 newtons to wqual 20 newtons total. The forces are acting in the direction that the object is
being forced, because it is going at a much faster rate, than needed.
#$&*
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about 30 min
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This looks very good. Let me know if you have any questions.