Motion Flashcards
define displacement
the distance moved from a fixed position in a stated direction an
define speed
the rate of change of distance
define velocity
the rate of change of displacement
define acceleration
the rate of change of velocity
average speed =
Total distance traveIed /Total time taken.
velocity =
v =Δs/Δt
v – velocity/ms–1
Δs – change in displacement/m
Δt – change in time/s
When a body moves with a constant velocity u ms-t, the displacement at any time t is
given by
x=ut
1st equation of motion
derived from acceleration formulae
v=u+at
acceleration for motion
a=v-u/t
s=
ut+1/2at²
vt+1/2at²
(u+v)/2 t
v²=
u²+2as
When an object is thrown vertically
upwards and air resistance is ignored,
the acceleration is equal to
-g which -9.81
if a ball is thrown up when does it reach its mamxium height
when v =0
The slope of a displacement–time
graph measures
velocity
The slope of a velocity–time
graph measures
acceleration
The area under a velocity–time
graph measures
displacement
during projectile motion the the force gravity only acts on which component
the vertical component
during projectile motion if air resistance is acknowledged what component does it affect
the horizontal component
