Newton's 3rd Law and Vectors Resource

I found this video helpful, because it first reviewed Newton's 2nd Law before explaining Newton's 3rd Law, so the viewer is able to make connections between the two laws. It first stated Newton's 2nd Law, "things in motion will stay in motion unless acted upon by an outside force" and then later on stated Newton's 3rd Law, "for every action there is an equal and opposite reaction". The video also contains many examples and diagrams, which personally draws me to the video because I'm a visual learner. For example, there is a diagram with a box of a specific weight and two vectors pushing in opposite directions of an equal force of 10N so the box remains at rest. The vectors are just guidelines to know the actual direction and Fnet (total force on the object) of the object. When the video was reviewing Newton's 2nd Law, it had an example of a person that had been pushed on frictionless ice, and that person kept moving unless something or someone stopped that person. I know this video is reliable, because I compared the content of the video to my class notes and they match up.

--> To skip to Newton's 3rd Law, skip to 9:40
Newton's 3rd Law states, "for every action there is an equal and opposite reaction", but the video alters that definition to "for every action force there is an equal magnitude and opposite direction reaction". This definition is actually a little clearer to me, because it is a little bit more specific. For example, the video has a diagram where someone is pushing on a wall with 10N so the wall is pushing back on the person with 10N, because for that force there is an equal magnitude of the same force in the opposite direction. The video then proceeded to explain that the only exception would be if the person was so strong that it could push on the wall to the point where the wall couldn't push back with sufficient force, causing the wall to briery accelerate and topple over.

Newton's 2nd Law and Newton's 3rd Law relate, because the Fnet (total force on the object) will cause the equal and opposite reaction force. For example, if a box is being pushed with an Fnet in the right direction, then the box is pushing on the ground to the right and the ground is pushing on the box to the left. The only way the box could move forward would be if someone were pushing harder on the box in the right direction than the ground was pushing on the box in the left direction. I liked this video, because it helped me to see that connection between the two laws.