(Blank)
transfer of energy when a force is applied over a distance; measured in joules
work
energy a moving object has because of its motion; determined by the mass and speed of the object
kinetic energy
rate at which energy is converted; measured in watts (W)
power
machine that is a combination of two or more simple machines
compound machine
elastic potential energy
a region or set of regions around which a boundary can be defined
system
device that makes doing work easier by increasing the force applied to an object, changing the direction of an applied force, or increasing the distance over which a force can be applied
machine
energy that is stored due to the interactions between objects
potential energy
energy that is due to chemical bonds
chemical potential energy
sum of the potential energy and kinetic energy of the objects in a system
mechanical energy
the ability to cause change, measured in joules
energy
ratio of the output force exerted by a machine to the input force applied to the machine
mechanical advantage
ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage
efficiency
law of conservation of energy
machine that does work with only one movement; examples include lever, pulley, wheel and axle, inclined plane, screw, and wedge
simple machine