Do Objects Accelerate Independently and What Defines a Kinetic Force?

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In summary, the first statement is false because an object does not necessarily need to interact with another object to cause acceleration. The second statement is also false because a stationary object has zero acceleration and therefore cannot exert a kinetic force.
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darkmatter820
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Homework Statement



1) If one object is accelerating, there must be another object that is accelerating (T/F/N)
2) A stationary object can exert a kinetic force. (T/F/N)


Homework Equations


2) F=ma


The Attempt at a Solution


1) My answer is false for this one because if the object doesn't interact with any other objects it won't cause any acceleration to other objects. (I learned that Δp=-Δp. If I divide both side by Δt, I will get F=-F. Assuming masses are constant, there are changes in acceleration?)
2) My answer is also false for this one since stationary object has zero acceleration, all the forces sum up to zero also. (If you pushes an object on a floor, would the floor exert a kinetic friction on the box when it's stationary?)
 
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  • #2
1. If an object doesn't interact, does it accelerate? Think of Newton's Third Law.
2. What is a kinetic force? I've never heard this term before.
 

FAQ: Do Objects Accelerate Independently and What Defines a Kinetic Force?

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