Use the template to model free fall from gravity. If you program the rock correctly, it should fall back to the ground. after being clicked and dragged anywhere above the ground. This is your world. You can make it behave any way you want it. But to effectively model reality, you can check your work simply by seeing if the free fall seems realistic (compare to the free fall of objects in reality).
Use the important relationships between position, velocity and acceleration to program the rock: velocity is a change in position over time, and acceleration is a change in velocity over time. Use a simple program to model these relationships effectively. Hint: time is a sequential measure of cyclical events. You do not need to use "seconds" for your time. You can use "# of loops." Similarly, "pixels" can be used in place of "meters."
