Hey there I am not sure if I used this pic yet because this pic was taken back from a month ago. Anyways I will be talking to you about force today again. I am going to talk about "freebody diagrams" (without the diagram). So as you can see this is a picture of a runner. You may not know this but this was taken at the finish line. So he is decelerating. Free body diagrams measure anything that force pushes or pulls against. So there are two forces that we are able to find. That would be the mass of his body pushing down and the force of the ground pushing up. This causes the body to stay up right and not fall over. Now, because he is decelerating, he is accelerating in the opposite direction, or backwards. So when drawing the diagram we will have an arrow pointing down labeled "mg" and an arrow pointing up labeled "N" for normal. Both of which are the same length. Also there will be an arrow pointing opposite the runner's direction. So if we was running to the left, the arrow would be pointing to the right. And vise versa. Also this arrow should be labeled "F for force". And that is basically it. So I hope you have enjoyed yourself.
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