A cart of mass \(M = 2.0 \text{ kg}\) is initially at rest on a horizontal, frictionless track. A force sensor is used to measure the net horizontal force \(F\) exerted on the cart as it moves along the \(x\)-axis. The data from the sensor is used to generate the graph of \(F\) as a function of position \(x\) shown below. What is the kinetic energy of the cart when it reaches the position \(x = 4.0 \text{ m}\)?