When a shuttle bus comes to a sudden stop

to avoid hitting a dog, it decelerates uniformly at 5.1 m/s2
as it slows from 9.6 m/s to 0 m/s.
Find the time interval of acceleration for
the bus.
Answer in units of s

V = Vo + a*t = o

9.6 + (-5.1)t = 0
-5.1t = -9.6
t = 1.88 s.