A particle moves in a straight line with acceleration a=(4t−6)a = (4t - 6)a=(4t−6) m s−2^{-2}−2 at time t t\,t seconds.
When t=0t = 0t=0 the velocity of the particle is 5 m s−1^{-1}−1.
Find the velocity of the particle when t=4t = 4t=4.