Answer:
v= -2.5 ms/s
Step-by-step explanation:
Velocity is the change in distance divided by change in time
Velocity can also be found by the slope of the graph because the velocity graph if the derivative of the position graph.
v=d/t
v=20/-8
v= -2.5
or find the slope:
(y1-y2)/(x1-x2)
=(20-0)/(0-8)
= 20/-8
= -2.5 m/s