acceleration of freefall

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Theory that ‘all object falling under gravity accelerate at same constant rate’ was discovered by

Theory that ‘all object falling under gravity accelerate at same constant rate’ was discovered by
  • A. Albert Einstein
  • B. Robert Hooke
  • C. sir Isaac Newton
  • D. Galileo Galilei
  • Correct Answer: Option D

Gravitational field strength of moon is

Gravitational field strength of moon is
  • A. 1.6 N ⁄ g
  • B. 1 ⁄ 6 × Gravitational field strength on earth
  • C. Zero
  • D. None of above
  • Correct Answer: Option B