how can waling on earth be an example of thirld law of motion]
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Newton's 3rd law of motion states that:
“For every action there is an equal and opposite reaction.”
It means that for every interaction between objects there are always 2 forces acting. The forces must be equal in magnitude. That is they must both be equally "strong." They also must be opposite - working in opposing directions.
When we walk our foot pushes on the floor and the floor pushes back on us - in the opposite direction, resulting in our moving in the direction we are walking.
It's a little difficult to understand that this happens anytime we have an interaction between objects. When we sit down on a chair, the chair pushes up on us. And, of course, when we hit someone, he/she's going to hit us back
“For every action there is an equal and opposite reaction.”
It means that for every interaction between objects there are always 2 forces acting. The forces must be equal in magnitude. That is they must both be equally "strong." They also must be opposite - working in opposing directions.
When we walk our foot pushes on the floor and the floor pushes back on us - in the opposite direction, resulting in our moving in the direction we are walking.
It's a little difficult to understand that this happens anytime we have an interaction between objects. When we sit down on a chair, the chair pushes up on us. And, of course, when we hit someone, he/she's going to hit us back
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Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
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