A particle is traveling with a velocity of v={ 3sqrt(t)e^(-0.2t)i 4e^(-0.8t^2)j } m/s, where t is in seconds. Determine the magnitude of the particle's displacement from t=0 to t=3s. Use Simpson's rule with n=100 to evaluate the integrals. What is the magnitude of the particle's acceleration when t= 2s?