Momentum-the product of the mass and velocity of an object
Impulse-the product of the force and the time over which the force acts on an object
Conservation of Momentum-the total momentum of all objects interacting with one another remains constant
Elastic collision-when two objects collide and return to their original shapes with no loss of total kinetic energy
Inelastic collision-when two objects collide and move together as one mass
Work-the product of a force and the displacement of an object
Kinetic Energy-energy of motion
Potential Energy-stored energy or energy of position
Mechanical Energy-the sum of the potential and kinetic energy
Conservation of Energy-energy cannot be created or destroyed, but can change its form
Machine-a device that transforms the direction or magnitude of a force
Mechanical Advantage-how much a machine multiplies your work
Efficiency-the ratio of useful work output to work input
Power-the rate of work done in a given amount of time
(source)