Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.Kinetic energy. Energy, Work (physics), Acceleration, Velocity, Invariant mass, Classical mechanics, Quantum mechanics, Momentum, Oberth effect, Center of momentum frame, Rotational energy, Angular velocity, Moment of inertia, Special relativity, Schrödinger equation, Density functional theory, Carl Friedrich von Weizsäcker, Projectile, Escape velocity