Here is the diagram. A 4 kg object is moving with a speed of 2.10 m/s in the x direction when it passes the origin, as shown in the figure below. It is acted on by a single force Fx that varies with x. (a) What is the work done by the force from x = 0 to x = 2 m? b) What is the kinetic energy of the object at x = 2 m? (c) What is the speed of the object at x = 2 m? m/s (d) What is the work done on the object from x = 0 to x = 4 m? (e) What is the speed of the object at x = 4 m? I know I have to integrate to get the work done. It is the integral from point x1 to point x2 of Fx Dx My question is, what do I integrate? Can someone help me get started? Thanks.