1. A stationary 12,500 kg rocket blast soft starting from rest from earth and enters into a circular orbit 25,500 km from the centre of the planet. Find: A) It's total orbit energy, B) its speed at launch, C) the work required to put it into orbit 2. Write work/energy equations for A) rocket moving at speed V at lift off that barely escaped with no engine use B) A rocket at rest on earth blasts off and enters a circular orbit or radius C) A rocket moving at speed V at lift off rises with no further engine use and enters a circular orbit of radius D) A satellite moving at the speed V at a distance from the earths centre falls to the earths surface