click below
click below
Normal Size Small Size show me how
Chapter 11 Vocab
Term | Definition |
---|---|
Motion | an object s change in position relative to a reference point |
frame of reference | a system for specifying the precise location of objects in space and time |
displacement | the change in position of an object |
speed | the distance traveled divided by the time interval during which the motion occurred |
velocity | the speed of an object in a particular direction |
acceleration | the rate at which velocity changes over time; |
force | an action exerted on a body in order to change the body's state of rest or motion |
friction | a force that opposes motion between two surfaces that are in contact |
static friction | the force that resists the initiation of sliding otiong between two surfaces that are in contact and at rest |
kinetic friction | the force that opposes the movement of two surfaces that are in contact and are moving over each other |