An object with an initial speed of 10 m/s accelerates uniformly at 1.5 m/s^2 for 8 s. What is its final speed?
Answer and explanation
Correct answer: B. 22 m/s
- Step 1: v = u + at. Step 2. v = 10 + 1.5 x 8 = 22 m/s. Answer: 22 m/s. Why not the others: 106 m/s: this squares the time. 12 m/s: this ignores the initial speed. 10.19 m/s: this divides acceleration by time.
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