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Discover how speed, velocity and acceleration are interlinked but very different measurements of motion.Key facts
- The velocity and acceleration of any moving object can be calculated.
- Speed is the distance traveled over time.
- Velocity measures an object's rate and direction of change in position.
- Acceleration measures the change in velocity over a period of time.
Transcript
How do we measure speed?
Speed
Speed is distance travelled over time.
Speed is a scalar.
A scalar is simply a quantity – it can be any number at all, or part of a number, or even zero.
In the case of speed, this number tells us how fast an object is moving.
Speed is ...
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