Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to calculate position as a function of time [title] Understand your goal. [step] You will be given a problem usually in the form of a story problem. The thing you are finding is final position (d1).

Ending1: Then you know how you plan to reach it. [substeps] D1 is the answer to the problem. Ending2: [title] Identify initial position (d0). [step] Initial position is usually in meters but it can be in other units of length. Ending3: You can expand on this if you want. It is essential to determine your d1 while calculating height. Ending4: Fixed position (d2) determines how the subject of the problem will determine the performance of your project. For instance, you might have a problem with a job where a product must be tailored to consumer needs.

Answer format: ending1/ending2/ending3/ending4