Motion Flashcards
Speed
Distance travelled per unit time
Velocity
Change in displacement per unit time
Displacement
Distance moved in a stated direction
Acceleration
Acceleration = change of velocity / time taken for change
Constant
Stays the same
Uniform acceleration
if an equal amount of velocity increases in equal intervals of time
Fluid Friction
occurs between fluid layers that are moving relative to each other
Static friction
the frictional force resists force that is applied to an object, and the object remains at rest until the force of static friction is overcome
rolling friction
the frictional force that occurs when one object rolls on another
Sliding friction
the resistance created by any two objects when sliding against each other
Terminal velocity
when the speed of a moving object is no longer increasing or decreasing; the object’s acceleration (or deceleration) is zero
Deceleration
reduction in speed or rate
Retardation
The action of delaying or slowing the progress or development of something
