Grade 12 IEB Physical Science - Kinematics Summary

IIINTM
II I Il II II L 11 IIIIIIIIIII S

EQUATIONS :



·
Vf = V, + ast (displacement not given
· Ac
=
Vist + Eart (final velocity not
given
Vf"
"
·
=
V, + 2aD (time not given

(Vf vi) given
·
Ax = + At (acceleration not




GRAPHS Of MOTION :




Stationary object :
acceleration-time Velocity-time displacement-time
&
&
a V ACC
(M S-2) . (M S .
(m)


st(S) st(s) xt(S)


object moving at a constant velocity &
&
V
&
ACC
A (m)
(M S .




(M S-2) .




t(S) xt(S)
> > t(S)


object moving with an
increasing velocity
&
a V
&

ACC
(M S-2) . (M S .
(m)


> t(S) > t(S) xt(S)
object moving with a
decreasing velocity
&
&
&
A ACC
V
(M S-2) .
it(s) (M S .
(m)



>
> t(S) t(S)



time graph area
·
area under an acceleration -

is velocity gradient
velocity-time graph displacement

iu
yea under is


· ofgradient a displacement-time graph is velocity
· gradient of a velocity -
time graph is acceleration