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Which of the following is the correct formula for finding acceleration?(a) a = dx/dt(b) a = d^2x/dt^2(c) a = x/t(d) a = d^3x/dt^3I got this question in homework.Origin of the question is Motion in a Straight Line in chapter Motion in a Straight Line of Physics – Class 11

Answer» CORRECT choice is (b) a = d^2x/dt^2

To elaborate: Acceleration is the RATE of change of VELOCITY. Velocity is the rate of change of DISPLACEMENT. Therefore, acceleration is the rate of change of rate of change of displacement = d^2x/dt^2.


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