1. Science Project Running and Running Shoes Micah Hinson

2. Question How can an athlete improve their technique by letting science work for them instead of against them? How do a runner’s shoe and friction affect a run? (Newton’s 3 rd Law: For every action there is an equal and opposite reaction.) (Newton’s 1 st Law: An object in motion will stay in motion unless acted upon by an outside force.)

3. Running Means terrestrial motion allowing humans and animals to move rapidly At one point in the circular motion, both feet are off the ground Speeds range from a person’s jog to sprint Kinetic and potential energy occur simultaneously in stride

4. Footstrike Occurs when foot makes contact with ground Footstrikes: 1. Forefront 2. Midpoint 3. Heel Strike Impacted Joints: 1. Hip 2. Knee 3. Ankle

5. Running Cycle 1.Footstrike 2.Midstance 3.Propulsion phase 4.Swing Phase

6. Midstance Knee flexion is under the trunk (bottom) and propulsion begins Hip and knee extend Propulsion Continues until leg extends back Maximum hip and knee extension Toe off Result: Body moves forward and initial swing begins *Propulsion means to push forward

7. Propulsion Phrase Involves beginnings at midstance until toe off Bodies store energy to propel forward Big hip extension Where we get the biggest pay out in running

8. Swing Phase The start of the limbs return Knee bends slightly as it swings to other part of body One side is toe off/propulsion other side is swing/recovery

9. Newton’s Laws in Running Friction with running shoe: The grip of a runner’s shoe against the ground Laws: As the runner’s foot and shoe hit the ground, the grip from the shoe to the ground and the force of the body going back, propel the runner forward. Without the grip from the shoe, the runner would slip and slide all over the place.

10. Shoes I Researched BrooksAsics New Balance Saucony

11. Results After Research I found: 1. Trail running shoes have a better grip to ground surfaces 2. Different styled shoes serve different purposes 3. New Balance would be the ideal shoe to buy in matters of friction or grip to the ground

12. Connection to Engineering Different shoes have different styles and traits that make them unique. Engineers need to consider: Gender, males and females have different bodies and running styles/traits/habits The purpose of the shoe, trail running, heel support, comfort etc… The shoe must be designed to withstand the force or impact of the runner Finally the fit to a person’s foot

13. Answer 1. Science can work for a runner in their shoes if they find a shoe that can take their force or impact. 2. Also, if the runner doesn’t have enough friction or grip to the ground with their shoes, the are more susceptible to falling or tripping.

14. Works Cited "Mizuno Introduces Gender Engineering Technology in Running Shoes." Mizuno Introduces Gender Engineering Technology in Running Shoes. N.p., 19 Jan. 2009. Web. 05 Mar. 2014.. "Running." Wikipedia. Wikimedia Foundation, 03 May 2014. Web. 05 Mar. 2014..