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Gravitational potential energy
The energy something has relative to some reference level.
Potential energy
Stored energy; potential for something to move.
Kinetic energy
The energy something has by virtue of motion.
Kinetic Energy Formula
KE = 1/2 mv², where m is mass and v is velocity.
Doubling velocity effect on kinetic energy
Doubling the velocity of an object quadruples its kinetic energy.
Doubling mass effect on kinetic energy
Doubling the mass of a moving object doubles the kinetic energy.
Potential Energy Formula
PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.
Doubling mass effect on potential energy
Doubling an object's mass doubles its potential energy.
Doubling height effect on potential energy
Doubling the distance above the ground doubles the object's potential energy.
Kinetic energy definition
All moving objects have kinetic energy, which depends on mass and velocity.
Potential energy definition
Ability to move in the future, related to an object's position.
Energy transfer as heat
Energy always seems to end up being transferred as heat due to the second law of thermodynamics.
Energy conversion
One type of energy can be transformed into another, more useful type through various processes.
Energy movement
Energy moves from areas of higher energy to areas of lower energy.
Reference level in potential energy
The reference level is the point from which potential energy is measured.
Effect of height on potential energy
A sack raised twice as high has twice the potential energy relative to the ground.
Comparison of potential energy
A block raised a certain distance has less potential energy compared to being raised vertically to the same height.
True or false: Kinetic energy
True; kinetic energy is the energy something has by virtue of motion.
True or false: Gravitational potential energy
True; gravitational potential energy is the energy something has relative to some reference level.
Energy of movement
Kinetic energy is defined as the energy of movement.
Stored energy
Potential energy is defined as stored energy.
