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. 12

**
  1. Step 1: Use the velocity-time relationship .
  2. Step 2: Setting , , and , we have .
  3. Step 3: Carry out the arithmetic: .
Answer
12.
Why not the others: '16' adds rather than subtracts the constant term in the final step in evaluating ; '13' omits the factor of 2 in the denominator during simplification in evaluating ; '4' adds acceleration directly to velocity () without multiplying by time .

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