Try to solve it , it is physics lab

Q21. Imagine an experiment where you will release the car from slightly (5-10 cm) below where you actually released it in making your U(x) graph. Using that graph, do the following: a. Choose a nice value for that release point, and put an 'R' on the graph at that point b. Draw a total system energy line (label it E) given your choice of 'R' c. Assuming that mechanical energy is roughly conserved, indicate the bottom of the motion of the cart with a 'B' on the graph d. Indicate the location at which the car will be going fastest with an 'F.' How would you calculate the kinetic energy at that point? e. Now, given that there is dissipation in the system, it will eventually come to rest. Indicate the location this 'equilibrium' position with an 'X' (as this is where riders will exit the ride). How do you know where this is? HINT: Comment on the force on the car at this position