Yesterday night, when I was on my bed, one of the funny question came to my mind and I'm posting it here before I forget. Suppose god come to earth and start making a big hole on the land of India. The length (or depth) of that hole is 12800 km. I mean it starts from India and end to America. (I'm not good in Geography and I considered that America is just opposite to India) That hole passes through the center of the earth. God was clever and so he coated that hole with a perfectly adiabatic material so that lava inside the earth crust should not trouble people traveling from India to USA using that hole. He also arranged oxygen on that hole. Now God went back. Some days later one man tried to get into America without having Visa to travel. He packed reasonable amount of food to take with him and jumped on that hole. Now take everything normal and tell whether that person can reach America or not and if he can reach how much time he will take to reach there.