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Bicycle is the answer
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Inertia is directly propostion to the rest mass of the object/mass/body until/unless external force act up on it. The greater the mass, the more inertia.By this equation you will understand how it is proportionated //M = m/sqrt(1 - (v/c)^2)// ; m is the rest mass, v is the speed of the mass, and c is light speed Hence "BICYCLE" is answer
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