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9 September, 07:04

How does speed/velocity change

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  1. 9 September, 07:23
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    Speed/velocity can be changed by friction, such as air resistance
  2. 9 September, 07:26
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    Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed is ignorant of direction. On the other hand, velocity is a vector quantity, it is direction-aware.
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