Newton’s first law of motion is stated as: “An object remains in a state of rest or of uniform motion in a straight line unless compelled to change that state by an applied force.”
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The three fundamental laws presented by Newton are known as Newton’s laws of motion.
Isaac Newton further studied Galileo’s ideas on force and motion.
The effect of frictional force can be minimized by using a smooth marble, a smooth plane, and providing a lubricant on top of the planes.
Galileo’s argument suggests that an unbalanced (external) force is required to change the motion of the marble, but no net force is needed to sustain its uniform motion.