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Question 5148
NEET Physics · Medium

Basic Mathematics & Vectors: Mixed Vectors & Calculus MCQ

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Mixed Vectors & CalculusMediumQuestion 5148

Question

If position vector r = 3t²î + 2tĵ, then velocity at t = 1 s is:
  1. A
    3î + 2ĵ
  2. B
    6î + 2ĵ
    Correct
  3. C
    6î + ĵ
  4. D
    3î + ĵ

Correct answer

6î + 2ĵ

Explanation

v = dr/dt = 6tî + 2ĵ. At t = 1: v = 6î + 2ĵ m/s.

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