A car moving at 3 m/s accelerates uniformly at 3 m/s for 6 s. What is its final speed?
Answer and explanation
Correct answer: D. 21 m/s
- Step 1: Use .
- Step 2: m/s.
Answer
21 m/s.
Why not the others: 18 m/s: it leaves out the initial speed. 12 m/s: it adds the numbers instead of using . 54 m/s: it multiplies all three quantities.
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More Force and Motion questions
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