science vocab (copy)
Power is the time rate at which work is done
Power is also the rate at which energy is expended
Work is the product of force and the distance through which the force moves
Work-energy theorem states that the work done on an object equals the change in kinetic energy of the object
Joule is the SI unit of energy and work, equivalent to a newton-meter
Kinetic energy is the energy of motion, described by the relationship Kinetic energy = 1/2 * mass * velocity^2
Momentum is the product of the mass of an object and its velocity
Potential energy is the stored energy that a body possesses because of its position, shape, or state
Power is the time rate at which work is done
Elastic collision is a collision in which colliding objects rebound without lasting deformation or the generation of heat
Energy is the property of a system that enables it to do work
Impulse is the product of the force acting on an object and the time during which it acts
Impulse-momentum relationship states that impulse is equal to the change in the momentum of the object upon which the impulse acts
Inelastic collision is a collision in which the colliding objects become distorted, generate heat, and possibly stick together
Conservation of energy states that in the absence of external work input or output, the energy of a system remains unchanged
Conservation of energy applied to machines states that the work output of any machine cannot exceed the work input
Conservation of momentum states that in the absence of an external force, the momentum of a system remains unchanged
Efficiency is the percentage of the work put into a machine that is converted into useful
Power is the time rate at which work is done
Power is also the rate at which energy is expended
Work is the product of force and the distance through which the force moves
Work-energy theorem states that the work done on an object equals the change in kinetic energy of the object
Joule is the SI unit of energy and work, equivalent to a newton-meter
Kinetic energy is the energy of motion, described by the relationship Kinetic energy = 1/2 * mass * velocity^2
Momentum is the product of the mass of an object and its velocity
Potential energy is the stored energy that a body possesses because of its position, shape, or state
Power is the time rate at which work is done
Elastic collision is a collision in which colliding objects rebound without lasting deformation or the generation of heat
Energy is the property of a system that enables it to do work
Impulse is the product of the force acting on an object and the time during which it acts
Impulse-momentum relationship states that impulse is equal to the change in the momentum of the object upon which the impulse acts
Inelastic collision is a collision in which the colliding objects become distorted, generate heat, and possibly stick together
Conservation of energy states that in the absence of external work input or output, the energy of a system remains unchanged
Conservation of energy applied to machines states that the work output of any machine cannot exceed the work input
Conservation of momentum states that in the absence of an external force, the momentum of a system remains unchanged
Efficiency is the percentage of the work put into a machine that is converted into useful
