The final velocity of an object moving in one dimension is given by the formula v = u + at, where u is the initial velocity, a is the acceleration, and t is the time. Solve this equation for a.

Start with v = u + at. Subtract u from both sides to get v − u = at, then divide both sides by t: a = (v − u)/t. Therefore, the correct choice is D, a = (v − u)/t.

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