WEPE Theory Flashcards
Mass:
Force:
Weight:
Mass is the amount of substance contained by an object… kg
Force any influence that attempts to cause a change in the relative motion of an object. Directional push or pull… N (newtons)
Weight is the measurement of force that is required to equal the force of gravity hat exists between two masses. Measurement of newtons of force but commonly described in kg.
Work
Application of force to an object to change its motion. Work is a FORCE acting through a DISTANCE. Work is measured in JOULES. (J)
W=force (kg*9.81) * distance(M)
Energy
This is the capacity to do work.
Potential: energy stored in the position of objects
Kinetic: energy stored in the motion of objects
Watt hour is a unit of electrical energy. Power through time.
Power
Power is the rate of doing work.
Work/time
Formulas
Work
Energy
Powers
work=force*distance
(Joules, newtons, meters)
Force is the weight in kg times 9.81 to get newtons.
Energy=power*time
Power=work/time
