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QAIPM-2015-Ph-1262: NEET 2015 Physics - Class 11 AIPM-2015-Ph-1262 Solution: A ball is thrown vertically downwards from a height of 20 m…

A ball is thrown vertically downwards from a height of 20 m with an initial velocity v0v_0. It collides with the ground losses 50 percent of its energy in collision and rebounds to the same height. The initial velocity v0v_0 is (Take g = 10 m s−2\text{m s}^{-2}) 28 m s−128\ \text{m s}^{-1} 10 m s−110\ \text{m s}^{-1} 14 m s−114\ \text{m s}^{-1} 20 m s−120\ \text{m s}^{-1}

Multiple Choice Options

  • A 28 m s −- _ 1
  • B 10 m s −- _ 1
  • C 14 m s −- _ 1
  • D 20 m s −- _ 1

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