| Question | Answer |
| Mechanical System | is a group of physical parts that interact with each other |
| Force | is a push or pull that acts on an object |
| Contact Force | must make contact/touch the object to push or pull |
| Friction | is a force that opposes that relative motion of an object |
| Action-at-a-distance | can push and pull an object without contact |
| Gravity | is the attraction between 2 objects due to there mass the amount of attraction depend on each item's mass |
| Mass | is the amount of matter in an object |
| Weight | is the amount of force on an object due to gravity |
| Spring Scale | shows the Weight of an object in Newtons |
| Work | is the amount of effort spent where a force causes an object to move a distance |
| Energy | is defined as the ability to work |
| Kinetic Energy | when an object is moving, the energy it has is Kinetic Energy |
| Potential Energy | any energy that is stored is Potential Energy |
| Gravitational Potential Energy | the Potential Energy of an object that is able to fall is Gravitational Potential Energy |
| Machine | is any mechanical system that reduces the force required to accomplish work |
| Input Force(Fin) | the force that is applied to the machine |
| Output Force(Fout) | the force that the machine applies to an object |
| Mechanical Advantages | the amount by which a machine can multiply an Input Force |
| Ideal Mechanical Advantages | the Mechanical Advantage of a machine that has no friction |
| Thermal Energy | is Energy created by heat |
| When Work is Missing... | Nxm=N/1 x m/1 |
| When Force is Missing... | N=Nxm/1 x 1/m |
| When Distance is Missing... | m=Nxm/1 x 1/N |
