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NEET Physics · Medium

Laws of Motion: Applications of Newton's Laws MCQ

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Applications of Newton's LawsMediumQuestion 5420

Question

Blocks of 2 kg and 5 kg together on frictionless surface. F = 21 N on 5 kg block. Both move together. Acceleration is:
  1. A
    3 m/s²
    Correct
  2. B
    4.2 m/s²
  3. C
    7 m/s²
  4. D
    10.5 m/s²

Correct answer

3 m/s²

Explanation

a = F/(m₁+m₂) = 21/7 = 3 m/s².

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