Phy 121
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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: ->->->->->->->->->->->-> :
12 kg*3 m/s^2= 36 newtons
• What would be the acceleration of a 4 kg mass subject to a net force of 20 Newtons?
answer/question/discussion: ->->->->->->->->->->->-> :
20= 4 kg*m 20/4=m m= 5 m/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: ->->->->->->->->->->->-> :
There are other forces acting on the object besides my own, because the force of the object is opposite of its motion.
• What is the total of all those forces and in what direction does this total act?
answer/question/discussion: ->->->->->->->->->->->-> :
It would move in a negative direction. -20 kg/m/s^2* 10 kg= -2 m/s^2
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30 minutes
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Good answers to the first two questions. Check the link regarding the last two:
&#Please compare your solutions with the expanded discussion at the link
Solution
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