Newton's
first
law
of
motion
describes
objects
that
have
no
____________________
forces
,
or
no
net
force
,
acting
on
them
.
It
has
____________________
parts
:
1
.
An
object
at
____________________
will
remain
at
rest
.
2
.
An
object
____________________
at
a
constant
velocity
will
continue
to
____________________
at
a
constant
____________________
