how long will it take a bobsled with a velocity of 6 meters a second o stop if it decelerates at a rate of 3 meters per second?

NB: acceleration should be measured in metre per second squared.

Find: t
Given:
v(0) = 6m/s
a = -3m/s^2
v(t) = 0m/s
Using:
v(t) = v(0) + a t

t = (v(t)-v(0))/a
t = (0-6)/(-3)
Conclusion:
2 seconds