- Frequency is how many times something happens in a certain period of time. The unit for frequency is Hertz (Hz). Real life examples: Radios uses MHz to send and receive their broadcasts. Similar to radio television also uses MHz to broadcast their channels just in a different range with radios.
- Torque is how much force is acting upon an object that causes it to rotate. Real life examples: a wrench uses torque to tighten or loosen a nut to a bolt, torque also applies to a steering wheel because the steering wheels pivots on a spot, similar to the wrench bottle caps torque is also involved in the tightening and loosening of a bottle cap.
- The difference of rotation and revolution is on its axis. Rotation occurs when an object turns around on its own internal axis while revolution is when an object revolves on a external axis. Example of rotation is a spinning top. A example of revolution is the movement of the Moon revolving around the Earth.
- The difference between centripetal and centrifugal is that centripetal goes to the centre while centrifugal flees the centre. The two can be seen on the swing ride that spins you around, centrifugal force makes you feel like your gonna fly off, but centripetal force is the force that keeps you on the ride when it is moving.
- Centre of gravity is the average point of the object's weight. When an object is tilted the centre of gravity of the object goes towards the direction where the object was tilted to.
- I think the artificial gravity in the movie Interstellar could be possible using centrifugal force, but it has not been done in real life because of ho big a space ship should be to rotate a big part of it constantly, so i think it is possible in real life but we just haven't figured out how to make it easier.