This note presents a pedestrian derivation of = 2 for freshmen in the physical sciences, with a method similar to that of 'handling units'.Such a picturesque derivation of the formula uses nothing but Newtonian laws of motions that do not go beyond mere definitions, together with well-known elementary physical quantities such as distance, velocity, force, momentum, and energy.The pedagogic merit of such an approach is discussed.
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Zion Elani (2020) studied this question.
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