cq_1_111

#$&*

Phy 241

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.

** **

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=15kg*3m/s^2=45N

#$&*

• What would be the acceleration of a 4 kg mass subject to a net force of 20 Newtons?

answer/question/discussion: ->->->->->->->->->->->-> :

a=Fnet/m=20N/4kg=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: ->->->->->->->->->->->-> :

With no other forces acting, a=20N/10kg=2m/s^2 This likely means some other force(s) like friction or gravity are effecting the system.

#$&*

• What is the total of all those forces and in what direction does this total act?

answer/question/discussion: ->->->->->->->->->->->-> :

Fnet=10kg*1.5m/s^2=15N This means there is the 20N mentioned earlier and 1 or more forces acting against it totaling -5N. This is also assuming that the 20N is the only force acting in that direction.

#$&*

*#&!

&#Very good responses. Let me know if you have questions. &#