8

Physics of Soccer

8

Physics of Soccer

**01**

**02**

Friction

When the Soccer ball is kicked, it rolls on the grass and slows down. This is because the ball creates friction when it is rubbing against the grass.

**Gravity**

We all must keep our balance to play soccer. "To effectively trap a soccer ball by moving in the direction it is already going, the body's center of gravity becomes important" (MacKay 46).

**03**

**04**

**Inertia**

In soccer, the ball is kicked in the air, it stops because the ball is resisting. This is how Newton's first law relates to soccer.

**Momentum**

When we kick, punt, or headbutt the ball, it travels away very fast. When we kick it, the ball gets momentum.

**05**

**06**

**Acceleration**

When the ball is kicked it starts to accelerate. "when a soccer player kicks the ball right of center the ball spins counter-clockwise and the Magnus force acts left, causing the ball to curve left" (The Physics of Soccer). This is how Newton's second law relates to soccer.

**Velocity**

When the soccer ball is kicked or thrown in, it goes in a certain direction at a certain speed. For example, the ball is thrown in going 8 miles per hour East.

**07**

**08**

**Force**

The ball is pushed when it is kicked or thrown, and is pulled when it is pulled back. Also, when two players that are the same height kick the ball, the ball doesn't move. That is how Newton's third law relates to soccer.

**Energy**

When we kick the ball it hits off our foot and starts to accelerate to where we kick it. "What we get is a much more inelastic collision where the ball initially deforms and squashes inward as you kick or hit it, then springs back to shape and pushes away from your foot. In collisions like this, kinetic energy isn't conserved" (Woodford).

“The Science of Sport.” Explain That Stuff, 17 Feb. 2019, www.explainthatstuff.com/science-of-sport.html.

“Physics Of Soccer.” Real World Physics Problems, 2009, www.real-world-physics-problems.com/physics-of-soccer.html.

MacKay, Jenny. The Science behind Soccer. Capstone Press, a Capstone Imprint, 2016.