AP Physics: Horse Pulls Cart - Is My Thought Process Right?

[JustinvanZyl]

Alright so I just wrote an AP physics test and one of the true or false questions was:

A horse pulls a cart and the cart pulls back on the horse with the same force. Does the cart move? (the cart starts at rest)

I said false because in order for an object to move it needs a net force but if the two opposing forces cancel out and the net force is zero then the object won't move.

Is my though process right? or am I missing something here?

 

[aba3]

Then your assumption would imply that nothing ever moves. Newton's law says every force has an equal and opposite reaction. So do all forces cancel out?

http://www.batesville.k12.in.us/physics/PhyNet/Mechanics/Newton3/Why_Don't_Cancel.html
Explains it

 

[A.T.]

I said false because in order for an object to move it needs a net force but if the two opposing forces cancel out and the net force is zero then the object won't move.

If the the two opposing forces both pull on the same object they cancel out and the object won't move. But here the two opposing forces pull on two different objects.