In the comic’s nakshatra, I.G rajan is hanging by a rope tied to his waist and is unconscious. He is hanging at top of the building which is 100 meter high. The height of I.G rajan is 1.75 meters. Dhruv has to save him. Dhruv is 30 meter away from the base of building and is in perfect straight line with fall of I.G rajan. Dhruv notices a cart of sand that can break I.G rajan fall and thus can in turn save him. How much time Dhruv has in total to react? Take G=9.825 unit