mechanics
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20 Terms
Distance
The total length of the path travelled
Displacement
The distance moved in a given direction
Speed
Distance travelled per unit time
Velocity
Speed in a given direction
Acceleration
Change in velocity per unit time
Time period
Time for one complete cycle
Mass
Amount of matter in an object
Weight
Force acting on a mass due to gravity
Gravitational field strength
Force per unit mass
Density
Mass per unit volume
Force
A push or pull
Resultant force
Single force with the same effect as all forces
Inertia
Resistance to change in motion
Momentum
Mass multiplied by velocity
Moment
Turning effect of a force
Centre of mass
Point where mass appears to act
Work done
Energy transferred when a force moves an object
Power
Rate of doing work
Efficiency
Useful energy output ÷ total energy input
Pressure
Force per unit area
Note 
Flashcards (120)