1 Gravity and the Newton 2 Dropping an Object 3 Swinging a Pendulum 4 Newton’s Laws of Gravitation 5 Gravitational Potential Energy 6 Galileo and Projectiles 7 Components of Initial Velocity 8 Projectile Problems – 1 9 Projectile Problems – 2 10 Projectile Problems – 3 11 Analysing Projectile Motion Diagrams 12 Newton and Escape Velocity 13 Changing Acceleration of Rockets 14 G-forces 15 Earth’s Motion and Rocket Launches 16 Circles 17 Centripetal Force 18 Newton and Orbital Speed 19 Time To Orbit 20 Orbits 21 The Slingshot Effect 22 Re-entry 23 Comparing Three Case Studies 24 Have Spaceship, Can’t Travel! 25 The Aether 26 Inertial and Non-inertial Frames of Reference 27 Einstein’s First Thought Experiment 28 Simultaneity 29 Time Dilation 30 Length Contraction 31 Relativistic Mass 32 Special Relativity and Space Travel