GK QUESTION#3013
Statement I: Galileo studied the motion of objects on inclined planes to understand how forces affect motion. Statement II: He concluded that in the absence of external forces, objects continue to move with constant speed. Statement III: This observation directly supported Newton’s Third Law of Motion. Options:
Show Answer
Answer
B. Only Statements I and II are correct
Show Explanation
Explanation
Galileo used inclined-plane reasoning to examine motion with reduced friction. Persistence of uniform straight-line motion in the absence of a net external force underlies Newton’s first law. It does not state the action–reaction pairing of the third law.