Average Velocity The average velocity v during the time interval At is defined as the displacement△ k divided by△t 1 △t 孓t f Physics 121: Lecture 4, Pg 4Physics 121: Lecture 4, Pg 4 Average Velocity The average velocity v during the time interval t is defined as the displacement x divided by t. f i f i t t x x t x v − − =   =