1
.
Linear
____________________
is
the
____________________
of
____________________
and
velocity
:
p
=
mv
2
.
The
____________________
of
____________________
of
momentum
:
For
a
____________________
system
,
the
____________________
momentum
before
a
collision
is
____________________
to
the
total
momentum
____________________
the
____________________
.
