[Member (365WT)]answers [Chinese ]  Time :20191020  Definition
(△x=displacement Δt=time taken by this displacement)
Other calculation formula
2 × V1 × V2 ÷ (V1 V2) = average speed. (the average speed of the first half is V1, and the average speed of the second half is V2)
In a uniform linear motion, the average velocity can also be calculated as (V0 Vt) ÷ 2, where the average velocity also represents the instantaneous velocity at the intermediate moment of the time used to pass the displacement.
However, if it is a uniform speed movement, then there is a formula = (initial speed) 2. 
