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

Answer and explanation

Correct answer: C. 24

  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
24.
Why not the others: 6 is the acceleration ; 25 adds rather than subtracts the constant term in the final step; 30 computes .

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