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vocab
Term | Definition |
---|---|
motion | is the process of changing position |
reference point | the starting point you use to describe the motion or the position of an object |
distance | is the total length of your path |
displacement | is the distance between your initial, or starting, position and your final position |
speed | is the distance an object moves divided by the time it took to move that distance |
velocity | is the speed and direction of an object's motion |
acceleration | is the measure of the change in velocity during a period of time |
force | push or pull on an object |
contact force | is a push or pull applied by one object that is touching it |
non contact force | a force that pushes or pulls an object without touching it |
friction | is a contact force that resists the sliding motion between two objects that are touching |
gravity | is a non contact attractive force on an object that exists between all objects that have mass |
balanced forces | when the net force on an object is O N, the forces acting on it |
unbalanced forces | when the net force acting on the object |