Kinematics programs for your TI 84 calculator can help you tremendously in your physics class. Be sure to check them with problems you have answers to. Some of these might have errors. Please be careful with them. Let me know if modifications need to be made.
For KINA, enter X (the variable X from the X, T, theta, n key just to the right of your ALPHA key) for your unknown. I believe you can enter 2 unknowns.
Please let me know if it works for you!