A helicopter is flying horizontally with a speed $v$ at an altitude $h$ has to drop a food packet for a man on the ground. What is the distance of helicopter from the man when the food packet is dropped ?

• A

  $\sqrt{\frac{2gh{v}^2+1}{{ h}^2}}$
• B

  $\sqrt{2gh{v}^2+h^2}$
• C

  $\sqrt{\frac{2gh}{v^2}}+h^2$
• Correct answer
  D

  $\sqrt{\frac{2v^2 h}{ g}+h^2}$

Hence, the correct answer is option: 'D'.