Here is HW #1 due Wednesday 01/24/18 in the grader's (TBD) mailbox. This is in addition to what you did on Friday in class. If you didn't finish in class on Friday, finish it at home.
A few points:
1) plots have labels and titles.
2) don't pick an initial condition that results in no motion.
3) When asked to comment on what changes, discuss how the modeling of the motion varies with timestep for the two different cases including comparing the time steps needed for different force laws and the specified accuracy. Use sentences and maybe paragraphs if need be and explain your answer.
Here are the expectations for writing up homework assignments.