Medium MULTI_CORRECT +4 / -1 PYQ · JEE Advanced 2020

Which of the following are correct statements about Newton's Second Law?

  1. A Force equals rate of change of momentum Correct answer
  2. B $F = ma$ only when mass is constant Correct answer
  3. C It is valid in non-inertial frames without modification
  4. D Net force zero implies constant velocity Correct answer

Solution

(a) True. (b) True — if mass varies, use momentum form. (c) False — pseudo-force needed. (d) True.

About this question

Subject: Physics · Chapter: Laws of Motion · Topic: Newton's Second Law

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