itsaf
~
perrojective
·
1.
motors
, iiliii'ss((((;";(s);)
weight
to
·*
any objecto n
the gravitational force the earth exerts on or near its surface
if
weighto fobjectisn'tbalance -accelerates towards earth
·
acceleration
guamitational
on earth surface
·
near
·
considered in absence ofair friction resistance
always constant usedin equations ofmotion
· -
i
9 9.8m.5-3 -
-
takedown
negative
=
as
downwards be of
sign
->
always acts wary conventions
·
reach ofmass
objects dropped in a
groundatsame time
regardless
to
·
independento fmass vacuum
free face projective
to
· *
objectmoving up/down the influence ofgravitational force with other forces
an under no
acting
~ max
height:Uf
=
0 speed direction:
-
v ve;a tre speeding up
=
· =
+
-
Up: ve v ve;a ve
slowing down
=
·
= -
*
+
+
Down (-ve) ·
v = -
ve;a =
tve
-
slowing down
v ve;a =
ve-speeding
·
up
-
= -
#
g
-
=
9,8M.5.2.
(constant) ->
displacementup vs down is equal opposite
-
direction
time up vs time
->
down is equal
A B
&
&
VatA+ B is equal
-
opposite directions
motion equations
·
a changes to
a always
-
9.8 (depending on
sign convention)
·
As
changes to
Ay
- vertical displacement Istays as is on
graphs)
I
constant
I
1. Vf Vi+gAt objectdropped from rest:Vi Vf gAt g
-
=
0
-> =
=
=
1.
(VfVi)At *
Ay directly proportion pl
+
=
Vf
Ay 2gAy
=
2. 3.
3. Vfe Vi + =
2gAy 4.
Ay EgAtz
=
tO At
4.Ay ViAt
=
Eg(At)4
+
~
perrojective
·
1.
motors
, iiliii'ss((((;";(s);)
weight
to
·*
any objecto n
the gravitational force the earth exerts on or near its surface
if
weighto fobjectisn'tbalance -accelerates towards earth
·
acceleration
guamitational
on earth surface
·
near
·
considered in absence ofair friction resistance
always constant usedin equations ofmotion
· -
i
9 9.8m.5-3 -
-
takedown
negative
=
as
downwards be of
sign
->
always acts wary conventions
·
reach ofmass
objects dropped in a
groundatsame time
regardless
to
·
independento fmass vacuum
free face projective
to
· *
objectmoving up/down the influence ofgravitational force with other forces
an under no
acting
~ max
height:Uf
=
0 speed direction:
-
v ve;a tre speeding up
=
· =
+
-
Up: ve v ve;a ve
slowing down
=
·
= -
*
+
+
Down (-ve) ·
v = -
ve;a =
tve
-
slowing down
v ve;a =
ve-speeding
·
up
-
= -
#
g
-
=
9,8M.5.2.
(constant) ->
displacementup vs down is equal opposite
-
direction
time up vs time
->
down is equal
A B
&
&
VatA+ B is equal
-
opposite directions
motion equations
·
a changes to
a always
-
9.8 (depending on
sign convention)
·
As
changes to
Ay
- vertical displacement Istays as is on
graphs)
I
constant
I
1. Vf Vi+gAt objectdropped from rest:Vi Vf gAt g
-
=
0
-> =
=
=
1.
(VfVi)At *
Ay directly proportion pl
+
=
Vf
Ay 2gAy
=
2. 3.
3. Vfe Vi + =
2gAy 4.
Ay EgAtz
=
tO At
4.Ay ViAt
=
Eg(At)4
+
