How is newton's 3 laws used in football?

Answer 1

Over eager Physics teacher or coach?

Newton's Laws govern the movement of objects in response to force

N1 "unless acted on by a force objects velocities don't change" means that a ball kicked (or thrown) will travel in a straight line unless acted on by another force (a player or gravity) of course in the real world we have wind and drag and friction to deal with too.

N2 is basically summarised as Force=mass x acceleration, this lets you work out how fast a ball will go if kicked with a certain force, or how much force at what acceleration is needed to knock over a player of a given mass.

N3 every action has an equal and opposite reaction. Basically this is important if you are going to run into somebody - there will be pain in both directions!

Answer 2

Newton's third law is evident in football when players pass a ball to each other - for every action (the force applied to the ball), there is an equal and opposite reaction (the force the ball exerts back on the players). Newton's first law comes into play as the players move across the field - an object in motion will stay in motion unless acted upon by an external force, such as a tackle. Finally, Newton's second law relates to the force needed to accelerate and decelerate players during a game, based on their mass and the acceleration required.