Respuesta :

The answer is:

the first one

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The formula  to calculate average velocity is a) V (average ) = x(f) - x(i) /t(f) - t(i)

What is average velocity ?

Average velocity is a vector quantity . It is defied as the change in displacement  over a time interval .

Average velocity can be calculated as

Average velocity  = change in displacement / change in time travel

correct answer is a) V (average ) = x(f) - x(i) /t(f) - t(i)

where

x(f) = final position

x(i) = initial position

t(f) = final time

t(i) = initial time

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