Linear momentum
Mass kg
lower case
* SAGS
The product of mass and
velocity of the object p
=
mV
velocity m . st
+ the amount of movement
Momentum +
Unit :
kg object
Ky
·
of
. m . s an
. m . s
Momentum influenced
is
and by object
the
velocity of
mass an
Momentum vector direction will be the
is
quantity the
always that the
velocity
·
a same as as
,
vector
Momentum
Change in
Momentum
changes when the
velocity of the object changes .
final momentum
=
p pf
-
pi initial momentum
=
MVf-mri
k
=
in Uf-vi or m V-u * A not force causes an
object's movement, and
=
m
Therefore also
mV its momentum to
change
=
, .
direction.
g
.
e .
A
hockey ball is
moving at 10m st. in an
casterly It is hit and now
travels at 12 St m . in
original direction It .
the mass of the ball is 0
, 3
kg ,
calculate the
change in
momentum of the ball. p
=
mv
=
-
+ mv -
u
= 0, 312-10
s cast
,6
0
hg
=
. m.
Newton x Momentum
↑
when I not force
p only changes changes . A non-zero is exerted to
change V
.
Net force causes v and therefore causes
p as well
Ethe Net force
net force
acting on an object is
equal ** the rate of
change in momentumis
mass
Fret =
ma
acceleration
n
=
v
- u
a =
+
·
Fret
Fret =
I