The fisherman decelerates steadily to a stop in 20.6 s. What is the boat's acceleration, in m/s2, during this last portion of the trip? Initial velocity is 1.70 m/s. Use correct sig figs.

The answer is not -0.0825?

vf=vi+at

0=1.7+a(20.6)

a=-.0825m/s^2