A body starts with a velocity of and accelerates uniformly at . What is its velocity after (in m/s)?

Answer and explanation

Correct answer: A. 20

  1. Step 1: State the first kinematic equation for uniformly accelerated linear motion: , where is initial velocity, is acceleration, and is elapsed time.
  2. Step 2: Substitute , , and : .
  3. Step 3: Add the terms to obtain the final velocity: .
Answer
20.

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