NUCLEAR FUSION AND TRAVEL FOR MARS I

Why this huge energy consumption?
To overcome the planet's gravitational field and allow a ship to travel in outer space
All bodies around the globe are attracted to Earth, the force of attraction called the gravity and acceleration with which these bodies attracted into the gravitational field is called gravitational acceleration g = 9.81 m/s ².
Speed needed to escape Earth cosmic ship is 11000 m / s and can be done with an amount of energy of 2,400 tons of fuel.