A particle's position is s(t)=t3−6t2+9t+2s(t) = t^3 - 6t^2 + 9t + 2s(t)=t3−6t2+9t+2 (meters). What is its velocity at t=2t=2t=2?
−3-3−3 m/s
000 m/s
333 m/s
999 m/s