physics definitions

Front

Precision and accuracy

Back

precise - measurements have small range
accurate - average measurements close to true value

Front

vector quantity

Back

having magnitude and direction

Front

velocity

Back

change in displacement over time

Front

acceleration

Back

rate of change of velocity

Front

Momentum

Back

product of mass and velocity

Front

Density

Back

force per unit area, where force is acting normally to the area

Front

Displacement

Back

distance of a point to another point, from a straight line showing direction

Front

Force

Back

rate of change of momentum

Front

Centre of gravity

Back

point where all the weight of an object is considered to be acted upon

Front

Newtons first law

Back

an object continues to be at rest or constant velocity, unless resultant force is acted upon it