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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:

  1. AAll three statements are correct
  2. BOnly Statements I and II are correctCorrect answer
  3. COnly Statements II and III are correct
  4. DOnly Statement I is correct
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Answer

B. Only Statements I and II are correct

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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.

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