To first start off creating our calculations, we had to know some basic stuff. We searched up the average weight of a freshman in high school (playing football) and the total weight of football gear. The average weight of a freshman is 130 pounds, and the weight of football gear is about 20 pounds. This however, is a weight, and we needed a mass, so we converted this to 68.03 kilograms.
When we had picked out our video that we would use, we were able to get the information we really needed (since we didn't have the proper football gear on us and it would be dangerous to tackle without it). The total time that the player is running is 2.95 seconds. The total distance that the player runs was 12.5 yards, or 11.43 meters. Using the equation: velocity = change in distance/change in time, we were able to find that the total velocity that the player runs in with was 3.87 meters per second. Velocity is how fast an object covers a certain distance.
We could also use the equation: force = mass times distance, to find that the force the player ran in with was 777.58 Newtons, which is how hard he comes in with. We then found the time of impact was 2.27 seconds. We then used the equation: impulse = force times time. We found that the impulse was 1765.1 Newtonseconds which is how hard he is tackling in with during the full impact. We also found the momentum that the player runs in with, using momentum = mass times velocity to find that the momentum was 33.71 kilograms meters per second, which is the force that is delivered to the opposing player.