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Question 30661
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Circular Motion: JEE — Tangential and Centripetal MCQ

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JEE — Tangential and CentripetalMediumQuestion 30661

Question

A car (r = 100 m) enters a curve at 20 m/s and accelerates at 2 m/s². Centripetal acceleration at entry:
  1. A
    2 m/s²
  2. B
    4 m/s²
    Correct
  3. C
    8 m/s²
  4. D
    0.2 m/s²

Correct answer

4 m/s²

Explanation

a_c = v²/r = 400/100 = 4 m/s² (tangential acceleration is 2 m/s² — these are perpendicular).

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