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Question 5459
NEET Physics · Hard

Laws of Motion: Mixed Laws of Motion MCQ

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Mixed Laws of MotionHardQuestion 5459

Question

Net force on a 5 kg body if velocity v = 3t² − 2t is:
  1. A
    (30t − 10) N
    Correct
  2. B
    (6t − 2) N
  3. C
    (18t − 6) N
  4. D
    (15t² − 5t) N

Correct answer

(30t − 10) N

Explanation

a = dv/dt = 6t − 2. F = ma = 5(6t−2) = 30t − 10 N.

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