Jounal Entry 2/1

1. No it does not show a Newton third law force pair because of the fact that I'm the one that exerts the force on the bench, not the earth so for it to be correct it would have to be the force of me on the bench and the force of the bench on me in the opposite direction.

2. Yes it is a Newton third law force pair because the pen exerts a force on the desk while the desk exerts a force on the pen in the opposite direction and therefore the pen does not move. The forces balance and that is the third law.

3. No it is not a Newton third law force pair because I exert a force on the rope but in the opposite direction the rope would exert a force on me. Thats not what the other force is, it is the force that the rope puts on the wagon. The third law only involves 2 objects interacting so the fact that the 3rd object is in the picture it does not show a newton third law force pair.

4. Yes the book sliding represents the third law because the force that is put on the table is directly the same as the force that the table puts on the book that slows it down. Friction shows how the force that an object puts on another object that slows it down is equal to the force that slows it down.