Here are the positions at thtree different times for a bee in flight

Question

time one: 6.1 s position 1 (-2.9, 9.7,0)

time two: 6.5 s position two {-0.8, 6.7, 0)

A) between 6.1 and 6.5 what was the bee's average velocity

average velocity = (5.25, -7.5, 0) (assignment counted that as correct)

D) using the best information available what was the displacement of the bee during the time interval from 6.1 to 6.13s

I'm using the position prediction formula which is

r final = r initial + v average * delta time

rf = (-2.9, 9.7,0) + (5.25, -7.5, 0) * 0.03

my answer was (-2.7425, 9.475, 0) it was counted practically correct because zero is he only correct number

what am I doing wrong?

Answer 1

aren't you adding displacement to initial position when question was only about displacement?