the speed of particle can be
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Speed of a particle cannot be negative as it is a scalar quantity. It has only magnitude associated with it . It only tells how fast something is moving. On the other hand, velocity of a particle can be negative as it has both magnitude as well as direction associated with it.
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The speed of particles can be Positive or Zero, But not can be negative.
- Speed is a scalar quantity. Even Speed doesn't depend upon the direction that's why it can not be negative. It is only linked with magnitude. It just indicates the rate at which something is moving.
- If it is mentioned that the speed is zero, that means the object is in rest.
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