The units of speed and average speed are

same across all systems of units

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same only for SI

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different across all systems of units

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different only for SI

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Solution

The correct option is A same across all systems of units
Units for speed and average speed are the same for all systems of units. For example, SI unit is $m s^{- 1}$ , practical unit is $k m p h$ etc.
Formula:
$s p e e d = \frac{d i s t a n c e}{t i m e}$
$v e l o c i t y = \frac{d i s p l a c e m e n t}{t i m e}$

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