2. When there is an object that that is at
rest it will remain at rest. The only way it
is possible that it is not at rest is with an
unbalanced force, then the velocity
changes.
Also, when there is an object in motion
that continues with the same
momentum it will always go the same
direction, unless it is passed by an
unbalanced force.

3. The way acceleration is made is
when a force acts on a mass, the
more mass of the object being
accelerated the more amount of
force is needed to make the object
go quicker. This is called net force,
because the prevailing force is the
man kicking the object, which is the
mass.

4. Every force has a reaction force
that is the same size, but in the
opposite direction. Every time an
object pushes another object it
gets pushed back in the opposite
direction equally hard.