What are action/reaction? Forces AlWAYS occur in Single forces Opposite: What happens when one object is significantly larger than the other?

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Action and reaction refer to Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. This means that whenever one object exerts a force on another object, the second object exerts a force of equal magnitude but in the opposite direction on the first object.

### Key Points:

1. **Forces Always Occur in Pairs**: 
   - Forces are not isolated; they always come in pairs. If object A exerts a force on object B (action), then object B exerts a force on object A (reaction).

2. **Single Forces**: 
   - A single force cannot exist without its counterpart. For example, if you push against a wall, the wall pushes back with an equal force in the opposite direction.

3. **Opposite Forces**: 
   - The action and reaction forces are equal in strength but opposite in direction. This means that if you push a book on a table, the book pushes back against your hand with the same force.

### What Happens When One Object is Significantly Larger than the Other?

When one object is significantly larger than the other, the effects of the forces can be different due to the mass of the objects involved:

- **Acceleration**: According to Newton's Second Law ($$ F = ma $$), the acceleration of an object is inversely proportional to its mass when a force is applied. Therefore, if a small object (like a tennis ball) collides with a much larger object (like a wall), the wall will not accelerate significantly due to its large mass, while the tennis ball will experience a large change in motion (it may bounce back).

- **Perception of Forces**: While the forces are equal and opposite, the effects of those forces can be very different. The larger object may not visibly move or change state, while the smaller object may experience a significant change in velocity or direction.

In summary, while action and reaction forces are always equal and opposite, the impact of these forces can vary greatly depending on the masses of the objects involved.
Action and reaction forces always come in pairs, equal in strength but opposite in direction. When one object is much larger than the other, the larger object doesn't move much, while the smaller one changes its motion significantly.

What are action/reaction? Forces AlWAYS occur in Single forces Opposite: What happens when one object is significantly larger than the other?

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