Unit 8 - Energy, Work, and Power Flashcards
Whats the formula for kinetic energy?
1/2mv** (1/2 x mass x volume squared)
whats the formula for gravitational potential energy?
mgh (mass x gravity x height change)
Whats the formula for work done?
fd (force x displacement moved by the force)
or
(weight x vertical distance moved)
what is energy?
the ability of a body to perform work
what is the principle of conservation of energy?
the total energy of a system always remains constant but it can change from 1 form to another
what is kinetic energy?
the energy possessed by moving objects
what is potential energy?
the energy possessed by objects due to their position or configuration
what is gravitational potential energy?
energy possessed by objects due to their height from the surface of the earth
what is elastic potential energy?
energy possessed by objects due to stretch / energy possessed by strained objects
what is electric potential energy?
positive and negative attraction / the energy acquired by the charged particles in electric field
whats the formula for mechanical energy?
KE + (G)PE
what are the 3 types of potential energy?
-gravitational potential energy
-elastic potential energy
-electric potential energy
what is work done equal to?
energy transferred
what is 1 joule?
the energy transferred (work done) by a force of 1N when it moves through a distance of 1m
what is power?
the rate at which energy is transferred, or the rate at which work is done (how fast work is done)
