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NEET Physics · Medium

Laws of Motion: Mixed Laws of Motion MCQ

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Mixed Laws of MotionMediumQuestion 5453

Question

Mass 2 kg acted on by force 6î + 8ĵ N for 3 s (starting from rest). Velocity acquired:
  1. A
    9î + 12ĵ m/s
    Correct
  2. B
    3î + 4ĵ m/s
  3. C
    18î + 24ĵ m/s
  4. D
    6î + 8ĵ m/s

Correct answer

9î + 12ĵ m/s

Explanation

a = F/m = (6î+8ĵ)/2 = 3î+4ĵ m/s². v = at = (3î+4ĵ)×3 = 9î+12ĵ m/s.

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