Ball released from height h bouncing elastically on the ground: frequency of the motion

1. A.
   $\dfrac{1}{2}\sqrt{\dfrac{g}{2h}}$
2. B.
   $\dfrac{1}{2}\sqrt{\dfrac{2h}{g}}$
3. C.
   $\dfrac{1}{2\pi}\sqrt{\dfrac{g}{2h}}$
4. D.
   $\dfrac{1}{2\pi}\sqrt{\dfrac{2h}{g}}$

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1. A.
   $\dfrac{1}{2\pi}\sqrt{\dfrac{2h}{g}}$
2. B.
   $\dfrac{1}{2}\sqrt{\dfrac{g}{2h}}$
3. C.
   $\dfrac{1}{2}\sqrt{\dfrac{2h}{g}}$
4. D.
   $\dfrac{1}{2\pi}\sqrt{\dfrac{g}{2h}}$

Tap an option to check your answer.