PS Module 4: Work & Energy

energy that is due to chemical bonds

• chemical potential energy

• elastic potential energy

• kinetic energy

• mechanical energy

machine that is a combination of two or more simple machines

• compound machine

• efficiency

• mechanical advantage

• mechanical energy

ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage

• efficiency

• mechanical advantage

• power

• work

energy that is stored by compressing or stretching an object

• elastic potential energy

• potential energy

• simple machine

• power

the ability to cause change, measured in joules

• energy

• work

• power

• system

energy a moving object has because of its motion; depends on the mass and speed of the object

• kinetic energy

• potential energy

• mechanical energy

• elastic potential energy

states that energy cannot be created or destroyed

• law of conservation of energy

• work

• mechanical energy

• power

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

• simple machine

• compound machine

• mechanical advantage

ratio of the output force exerted by a machine to the input force applied to the machine

• mechanical advantage

• efficiency

• mechanical energy

• system

sum of the potential energy and kinetic energy in a system

• mechanical energy

• law of conservation of energy

• efficiency

• work