# I have no clue

I have searched for this answer all day long.
Why is Vave multiplied by 2 to obtain Vf?

i feel Vave=(Vf+Vi)/2
since Vi=0,we have the result.

Gokul43201
Staff Emeritus
$$v_{ave} = \frac{total~distance~traveled}{total~time~taken} = \frac {s}{t}$$