What is the final velocity and position of a freight train that accelerates at a rate of 0.04377 m/s for 4 minutes, starting with an initial velocity of 3.416 m/s? (a) . Using the notation 4x = x-x, for displacement, x for position at time t, x, for the initial position, v for velocity at time (, vo for initial velocity, and a for acceleration, determine what quantities are known and what quantities are unknown. Enter the values of some known quantities below. . Make sure you account for the signs of the vectors using the coordinate system in Part 1. m/s V m/s2 S (b) is the motion of the freight train one with constant velocity or constant acceleration? This will help you choose the correct equations of motion