P1 Motion Flashcards
use of rulers and measuring cylinders
to find a length/volume
use of clocks and devices(analogue+digital)
for measuring an interval of time
use of micrometer screw gauge
to measure very small distances
define speed
total distance/total time
acceleration of free fall g for a body near to the earth is _____.
constant
define velocity
change of velocity/total time
acceleration formula
change of velocity/total time
define mass
the amount of matter in a material
define weight
the amount of gravity force acting upon the matter
earth is the source of a _____ field.
gravitational
what does ‘g’ represent?
the gravitational force on a unit mass measured in N/kg
weight formula
W=mg
density formula
p or d=m/v
define friction
the force between two surfaces which impedes motion and results in heating
define air resistance
a form of friction
