The escape velocity for a planet is ve. A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface. When the body reaches the centre of the planet, its speed will be its speed will be The escape velocity for a planet is ve. A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface. When the body reaches the centre of the planet September 14, 2020 Category: Cengage NEET by C.P Singh , Chapter 12 - Gravitation , Part 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related