Galileo's measurement was used as the basis of his laws of motion. Newton. In Galileo's experiments, when the object rolled off the slope, it has been subjected to constant external forces (its weight), and its effect is constant acceleration. This suggests that the real effect of the force always changes the speed of an object, not just as it was originally imagined.. At the same time, it means that as long as an object is not subject to external force, it will keep the same speed
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