Velocity of a particle changes when:

Question

Accepted Answer

1.  **Vector Quantity:** Velocity is a vector quantity, which means it has both magnitude (speed) and direction .
2.  **Conditions for Change:** A vector variable changes if:
    *   Its magnitude changes.
    *   Its direction changes.
    *   Both its magnitude and direction change.
3.  **Conclusion:** Therefore, the velocity of a particle changes if either the magnitude of the velocity changes, the direction of the velocity changes, or both change.

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