Aparticle starts at the origin and moves away from it in a straight line. after 1.6 seconds, it is 12.8 meters from the origin. it then reverses direction due to a force field with a like charge. after 3.8 seconds total, the particle is at −9.23 m. what is the average velocity of the particle? 3.8 m/s −5.8 m/s −2.4 m/s 13.8 m/s

Average velocity of the particle is

Explanation:

Average velocity is defined as the total velocity divided by the total time. It is given  by the equation

In the given problem the particle starts from origin, travels and then reverses direction and travels till within a total time of

Displacement is defines as the shortest distance between initial and final point.  

Here displacement =

total time=

i think its c if i'm wrong