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STUDYING THE MOTION WITH TIME-VARIABLE ACCELERATION

The study of the behavior of a phenomenon involving several variables starts, in general, by changing the value of one of them, while the values of the others are kept constant. Based on this method, Galileo introduced the concept of acceleration, showing that the velocity varied with time according to the equation: a=v/t, thus conceptualizing the acceleration of a material body as the rate of change of its velocity with respect to time [1,2]. In search of a more favorable condition for investigating the behavior of objects in free fall, Galileo used the inclined plane to analyze naturally accelerated downward