The velocity of a particle is m/s. Find its displacement from to .

Answer and explanation

Correct answer: A. -4 m

  1. Step 1: Integrate to find displacement: . Step 2. At : m, and at . Answer: -4 m. Why not the others: 4 m: The sign is reversed; the displacement is the integral of the velocity. 0 m: That is the velocity at , not the displacement. 8 m: That integrates only the first term.

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