PHYSICS OF FOOTBALL

NEWTON'S FIRST LAW:
Newton’s first law states, when an object is in motion it tends to stay in motion and an object is at rest it tends to stay at rest unless acted on by an unbalanced force. Football demonstrates this law when a running back or wide receiver is running for the end zone at a constant speed and then get tackled.

NEWTON'S SECOND LAW:
Newtons second law describes how a force changes the motion of an object. kicker demonstrates the second law because in order for a object like a football to accelerate it would need a force form the kicker to move it. The force the kicker needs to use to kick the ball can be found with the equation F=MA

NEWTONS THIRD LAW :
In football a running back has to generate enough force to break a tackle. This force is momentum and can be found using the equation P=MV. If the defender has a greater mass and velocity or momentum he will be able to stop the ball carrier. If the ball carrier had a greater momentum the he would knock down the defender.

MOMENTUM:
Momentum is mass in motion. In a collision momentum can be transferred from one object to another but the total stays the same. This relates to football because when an offensive and defensive player hit each other the total momentum between them stays the same but the player with the most momentum will knock the other player down. To find out which player will knock the other down you need to use the equation P=FA.

MASS:
Mass is always the same it never changes. Mass in football is important because a player with a bigger mass can use their size to tackle the ball carrier or block as shown in the picture. The mass of a football player can be found using the equation M=F/A.

VELOCITY:
Velocity describes speed and direction. Velocity relates to football because when a ball carrier is running, he is running at a constant velocity. Velocity can be found with the equation V=D/T.

GRAVITY:
In football gravity or gravitational force is important because when a quarter back throws a ball it would never come down and we would never be able to play any sport.

Acceleration:
Acceleration in football can be demonstrated when a player is running slow and getting faster or running fast and getting slower. It can be found with the equation A=F/M.

forces:
In football there are many forces. when throwing a ball there is gravitational force. when running there is frictional force and normal force.

sources

• WWW.NBC.LEARN.COM/SCIENCE-OF-NFL-FOOTBALL
• note boock
• www.livestrrong.com