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CH 9 1-4
Term | Definition |
---|---|
motion | the distance from an object is changing |
reference point | a place or object used in comparison to determine if an object is in motion |
distance | the length of a path between two points |
displacement | the length and direction that an object has moved from it's starting point |
vector | a quantity that consists of both a magnitude and a direction |
speed | the _____ of an object is the distance travels |
average speed | (Dvide total distance over total time) |
instantaneous speed | the rate at which an object is moving at a given instant in time |
velocity | speed in a given direction |
slope | the steepness of a line graph |
acceleration | the rate at which velocity changes with time |
work | when an object is caused to move a certain distance |
energy | the ability to do work or cause change |
kinetic energy | the energy an object has due to its motion |
potential energy | stored energy that results from the position or shape of an object |
gravitational potential energy | potential energy related to its height |
elastic potential energy | the potential energy of objects that can be stretched out or compressed |
mechanical energy | an object's combined kinetic energy and potential energy |
law of conservation of energy | ... states that when one form of energy is transformed to another, no energy is destroyed in the process |