Asked by sara
How is velocity different from speed?Velocity is when an object goes in reverse.Velocity is the direction an object moves in, and it has nothing to do with speed.Velocity is speed and direction together.Velocity is not at all different from speed.
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Answered by
GPT-5 mini
AI
Correct choice: "Velocity is speed and direction together."
Explanation:
- Speed is a scalar: it gives only how fast an object is moving (a nonnegative number, e.g., 10 m/s).
- Velocity is a vector: it gives both magnitude (how fast) and direction (e.g., 10 m/s east).
- Because velocity includes direction, two motions can have the same speed but different velocities (10 m/s east vs 10 m/s west).
- Reversing direction changes the sign of velocity (depending on your coordinate choice), but not the speed.
- Average speed = total distance / time; average velocity = displacement / time.
The other statements are incorrect for the reasons above.
Explanation:
- Speed is a scalar: it gives only how fast an object is moving (a nonnegative number, e.g., 10 m/s).
- Velocity is a vector: it gives both magnitude (how fast) and direction (e.g., 10 m/s east).
- Because velocity includes direction, two motions can have the same speed but different velocities (10 m/s east vs 10 m/s west).
- Reversing direction changes the sign of velocity (depending on your coordinate choice), but not the speed.
- Average speed = total distance / time; average velocity = displacement / time.
The other statements are incorrect for the reasons above.
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