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

Answer and explanation

Correct answer: D. 23

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  1. Step 1: Use the velocity-time relationship .
  2. Step 2: Setting , , and , we have .
  3. Step 3: Carry out the arithmetic: .
Answer
23.
Why not the others: '18' calculates only the velocity increase , omitting the initial velocity ; '48' multiplies instead of adding initial velocity to ; '8' adds acceleration directly to velocity () without multiplying by time .

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