[单选题]
07.12: The definition of average veluxy ,3w,anu2 7p 9uchmocity 9zfk86ua)dq 4v v79ov s3oljhis
A. the average acceleration multiplied by the time.
B. distance traveled divided by the time.
C. $\frac{1}{2} (v_i + v_f)$
D. radius multiplied by angular velocity.
E. displacement divided by the time.
