Movin’ With Science

Run, Run, Run
By: Melissa Senn and Kelly Sherlock


external image running.jpg?w=300&h=225

Main Question: How does running cross country-long distance relate to science?



Reduce Friction while running- In running friction kills feet- Select a running surface that is foot friendly. Hard Surfaces such as cement and concrete are not good for your feet. Choose something soft like a running track or grass. It’s always smart to reduce as much friction as possible while running and make sure you always have a good pair of running shoes.


external image runningshoes.jpg


Acceleration is the rate at which the speed of an object is changing. Acceleration takes place the first 0-30 meters or about 3-4 seconds from the start of a sprint. Workouts to improve the acceleration of a runner, running repeat sprints of 20 meters over and over.
external image BRIGHTON%20TRACK4.jpg


Forces-
Running can be explained though Newton’s Third Law- For every action force, there is a reaction force that is equal but opposite in magnitude. The action force when you’re running is stepping on the ground. The reaction force pushes your feet and goes forward.

Alot of people think that running will make you loose Muscle Mass- the truth is you will only loose your muscle mass if you are burning more calories then you are already eating, which is why olypians runners are usually so thin, they just burn so much energy running that they burn muscle as well. If you are running 100 miles a week, yes you will start loosing muscle mass, but if you are running 6 or so miles a week, you have nothing to worry about.


Speed- is a huge part of running. Speed is determining how fast an object moves. In Cross Country running you want to have alot of speed at a steady pace so you can finish the miles in a good time.

Gravity- Is reduced when mass is added to a runner.
While you are running, when you come to a downhill (even it it’s small) think about you center of gravity being in the center of your pelvis. Picture is as a kind of steel ball. That is your center of gravity and it should be able to move up and down while the rest of your body moves fluidly around it while barefoot running.


Gravitational Force and Inertial forces are increased when mass is added to a runner.


Velocity
is also very important during running. Its how much distance you can cover in a certain amout of time, and in Cross Country running your covering a lot of distance and you want to run it an a low amount of time. The equation for velocity is distanced divided by time. During running you are going to want a high velocity and taking the shorter strides may help you achieve it.


Video:
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Definitions:

Friction- the rubbing of one object or surface against another

Acceleration- An increase in the rate of change, the act of accelerating-increasing the speed, the rate of increase of velocity


Mass- The amount of matter that a body contains and a measure of the inertial property of the body, that is its resistance to change of motion (inertia)

Velocity- Speed: distance traveled per unit, rate of change of position.

Speed- How fast an object in the distance is covered.

Gravitation- is that attractive force existing between any two objects that have mass. The force gravitation pulls objects together.

Gravity- is the gravitational force that occurs between the earth and other bodies. Gravity is the foce acting toward the earth.



Sources:
http://www.athletesacceleration.com/
http://www.newtonrunning.com/science/newtonian-science
http://www.google.com/images/running
http://en.allexperts.comhttp://www.youtube.com/watch?v=mZcj6IcjUeA
http://www.fearofphysics.com/w.php?define=speed
http://www.sportsci.org/jour/0103/mw.htm
http://blog.mlive.com/lcn/2008/05/BRIGHTON%20TRACK4.jpg
http://www.athletesacceleration.com/runningdrillsforacceleration.html
http://www.active.com/running/Articles/Speed_it_up__Running_acceleration_drills.htm
http://www.articlesnatch.com/Article/Barefoot-Running--Increase-Speed-And-Endurance-On-Downhills/1064548