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

Answer and explanation

Correct answer: B. 32

  1. Step 1: Under uniform linear acceleration, velocity at elapsed time is governed by the kinematic relation .
  2. Step 2: Substitute initial speed , acceleration , and duration : .
  3. Step 3: Evaluating the arithmetic yields .
Answer
32.
Why not the others: 24 computes ; 12 computes ; 72 computes .

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