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Force and Laws of Motion — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceForce and Laws of Motion1 Mark
MCQ
The earth pulls a stone downwards due to gravity.The stone exerts:
  • ✓
    An equal and opposite force on the earth
  • B
    A greater force on the earth
  • C
    A lesser force on the earth
  • D
    No force on the earth
✓

Answer

Correct option: A.
An equal and opposite force on the earth
According to Newton's third law, the stone exerts an equal and opposite force on the earth.
Since the earth is very massive and the effect of a small force on its motion is negligible.
Force is the mutual interaction between two bodies.
Forces between two bodies are always equal and opposite which is given by Newton's third law of motion.

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