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Physics C11:Momentum
Physics C11:Momentum Coach Leach
Term | Definition |
---|---|
Momentum | Newton’s “quantity of motion” characteristic of any moving system, directly proportional to both the system’s mass and its velocity |
Impulse | The change in momentum due to the application of a force |
Recoil | The reaction force of a projectile on the device that launched it |
Conservation of momentum | The total momentum of a system, including a multipart system, is conserved if the net external force acting on the system is zero. |
Thrust | The impulsive force on a rocket- or jet-propelled vehicle accompanying the expulsion of propellant exhaust that accelerates the vehicle |
Elastic collision | A collision in which kinetic energy is conserved |
Partially elastic collision | A collision in which the colliding objects exchange some of their kinetic energy for other forms of energy but do not stick together |
Inelastic collision | A collision in which kinetic energy is not conserved; Some or all of the initial total kinetic energy is consumed in deforming the colliding objects. |
Ballistic pendulum | An inertial device used to measure the energy of ballistic projectiles |
Center of mass | The point within a system where the entire mass of the system can be assumed to be concentrated when one is evaluating the behavior of the system according to Newton’s laws of motion; also called the center of gravity |
Angular momentum | The momentum of a rotating system that is dependent on the angular velocity and mass distribution of the system |