Intro to Energy Flashcards
the ability to move or change matter
energy
the ability to do work
energy
using force to move an object over a distance
work
causes energy to be transferred from one object to another
work
SI unit for energy
joule
the amount of energy needed to apply a force of 1 newton over a distance of 1 meter
joule
energy of moving matter
kinetic
energy that is stored in matter
potential
because electrical energy involves the streaming of electrons it is a form of
kinetic energy
because thermal energy involves the vibration of molecules and atoms it is a form of
kinetic energy
because sound energy involves the wavelike movement of molecules and atoms it is a form of
kinetic energy
because chemical energy involves holding energy in the bonds between atoms that make up molecules it is a form of
potential energy
because nuclear energy involves holding energy in the bonds between protons and neutrons in the nucleus of an atom it is a form of
potential energy
another name for the joule
newton meter
type of energy that does work
kinetic
the amount of kinetic energy in a moving object depends on the object’s
mass and velocity
1/2 * mass * velocity squared =
kinetic energy
formula for kinetic energy is
1/2 * mass * velocity squared
if the mass of an object doubles its kinetic energy will increase by a factor of
2
if the velocity of an object doubles its kinetic energy will increase by a factor of
4
which has more effect on an object’s kinetic energy? mass or velocity?
velocity
in the formula for kinetic energy, kinetic energy is measured in
joules
in the formula for kinetic energy, mass is measured in
kilograms
in the formula for kinetic energy, velocity is measured in
meters per second
