Exam-style question
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If a vehicle travels in a circular path of radius 30 m at a constant speed of 15 m/s, what is its centripetal acceleration?.
- A.7.5 m/s²
- B.10 m/s²
- C.5 m/s²
- D.12.5 m/s²
Model answer
What a good answer should say
- 7.5 m/s²
Explanation
Why this works
The formula for centripetal acceleration is a_c = v² / r. Substituting the values, a_c = (15 m/s)² / 30 m = 225 m²/s² / 30 m = 7.5 m/s².
Thus, the centripetal acceleration is 7.5 m/s².
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