The acceleration of a particle at time t t\,t seconds is a=4i−6tj m s−2\mathbf a=4\mathbf i-6t\mathbf j\text{ m s}^{-2}a=4i−6tj m s−2. Its initial velocity is (−i+2j) m s−1(-\mathbf i+2\mathbf j)\text{ m s}^{-1}(−i+2j) m s−1.
Find the velocity of the particle when t=2t=2t=2.