Galileo deduced that objects on an inclined plane, when no external force acts on them, move with a constant speed. This observation laid the foundation for understanding motion and inertia, highlighting that no force is needed to maintain constant velocity.
What did Galileo deduce about the motion of objects on an inclined plane when no force acts on them?
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Galileo deduced that in the absence of any force, an object on an inclined plane will continue to move indefinitely in a straight line with constant velocity. He discovered that objects accelerate uniformly down an incline due to gravity and that, without friction or other forces, the motion would persist uninterrupted. This principle laid the foundation for Newton’s first law of motion.