Repulsion and Velocity:
* Repulsion: Two positive charges do indeed repel each other due to Coulomb's Law. This means they experience a force pushing them apart, causing them to accelerate.
* Velocity: As the charges move further apart, the force of repulsion weakens (due to the inverse square law). This means the acceleration decreases, but the velocity continues to increase (though at a slower rate).
Acceleration:
* Decreasing Acceleration: The acceleration of the charges does indeed decrease as they move apart. This is because the force causing the acceleration (the electrostatic force) is inversely proportional to the square of the distance between the charges.
* Not necessarily reaching zero: The acceleration will approach zero asymptotically, meaning it gets closer and closer to zero without ever actually reaching zero. This is because the force never completely disappears, even at large distances.
Key Points:
* Velocity increases: The charges will continue to move faster, even though their acceleration is decreasing.
* Acceleration approaches zero: The acceleration will get progressively smaller as the charges move further apart, but it will never fully stop.
In summary:
While it's true that the acceleration of two positive charges decreases as they move apart, their velocity will continue to increase, albeit at a slower rate.
