Senior high school physics compulsory formula and formula derivation (derivation process) urgent!

Here, let the initial velocity be V0, the acceleration be a, and the time be t. first, v = V0 + at, where at is the velocity variation, and the initial velocity is the current velocity. Then, the total displacement S = v0t + 0.5at ^ 2. This formula can be proved in two ways: 1

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