Find the Velocity when acceleration is not constant 1. The problem statement, all variables and given/known data A particle moves along the positive x-axis with an acceleration in meters per second squared which increases linearly with x expressed in millimeters, as shown on the graph for an interval of its motion. If the velocity of the particle at x = 40 mm is 0.36 m/s, determine the velocity at x = 130 mm. I have attached an image of the question. 2. Relevant equations 3. The attempt at a solution I had thought to use: vx= v0x+at or s = s0 + v0xt +1/2*at2 But due to the acceleration not being constant these equations are not suitable. I'm guessing that I need an integral but I'm not sure how to start. Any help would be appreciated.