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motion vocab
Term | Definition |
---|---|
motion | is when an object changes in position relative to a reference point |
speed | is the distance traveled divided by the time interval during which the motion occurred |
velocity | the speed of an object in a particular direction |
acceleration | when velocity changes over time ,an object accelerates if it s speed direction or both change |
force | a push or pull |
newton | the unit for force |
net force | the combination of all the forces acting on an object |
friction | a force that opposes motion between 2 surfaces that are in contact |
gravity | a force of attraction between object that is due to their masses |
weight | is a measure of the gravitational pull on an object |
mass | a measure of the amount of matter in an object |