A car moving at 9 m/s accelerates uniformly at 3 m/s for 3 s. What is its final speed?
Answer and explanation
Correct answer: B. 18 m/s
- Step 1: Use .
- Step 2: m/s.
Answer
18 m/s.
Why not the others: 9 m/s: it leaves out the initial speed. 15 m/s: it adds the numbers instead of using . 81 m/s: it multiplies all three quantities.
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