Question

By which velocity a ball be projected vertically downward so that the distance covered by it in 5th second is twice the distance it covers in its 6th second ( g= 10 m / s² )

Options :

  1. 58.8 m / s

  2. 49 m / s

  3. 65 m /s

  4. 19.6 m / s

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Answer :

65 m /s

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