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Physics
Isaac Newton
Newtons Laws of Motion

When a soccer ball is kicked why do the action and reaction forces not cancel each other out?


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Wiki User
2008-12-28 08:25:07
2008-12-28 08:25:07

The game of soccer does not operate under its own unique physics. The forces involved are all absorbed and/or balanced as physical principles require.

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One of the forces is on the ball while the other is on your foot. Forces can only cancel out if they exist on the SAME body. Newtons III Law doesn't just say 'for each action there is an equal and opposite reaction' added onto the end of it should be 'on a different body'.

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the action force is your foot when u strike the ball the reaction force is the ball being kicked

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no because forces cancel only when the act on the same object. if two players kicked the same thing with opposite and equal forces at the same time, two interactions occur.

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Well in a single action-reaction pair, they cannot cancel out! The action and reaction forces act on different bodies. Lets say that we have a football. I kick it with 200 N of force. That is the action force, so the reaction force must be 200N(in the opposite direction) as well. The key here is that the reaction force did not act on the football, but on your foot! So the net force of the football is still 200 N in the direction I kicked it! Hope this helps some, -Sk Inventor

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They do. Its just that the kicker is attached to the Earth while he kicks and very very small change of momentum in the Earth's total momentum is unnoticeable. In other word the force of the player's foot on the ball is greater than the force of the ball on the players foot.


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