Relative speed Definition and 57 Threads

The relative velocity







v
→




B
∣
A




{\displaystyle {\vec {v}}_{B\mid A}}
(also







v
→




B
A




{\displaystyle {\vec {v}}_{BA}}
or







v
→




B
rel
⁡
A




{\displaystyle {\vec {v}}_{B\operatorname {rel} A}}
) is the velocity of an object or observer B in the rest frame of another object or observer A.

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  1. W

    How to Show Lorentz's Identity with Relative Speed?

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  5. S

    What's the Speed of the Bird Flying at a 60-Degree Angle?

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  7. P

    Relative speed: Horizontal distance travelled in a collision

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