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describing motion
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 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 | a push or pull of an object |
Contact force | is a push or pull applied by one object to another object that is touching it |
Noncontact force | a force that pushes or pulls an object with out touching it |
Friction | is a contact force that resists the sliding motion between two objects that are touching |
Gravity | is a noncontact attractive force that exists between all objects that have mass |
Balanced forces | when the net force of an object is 0 N |
Unbalanced forces | when the net force acting on an object is not 0 |