Forces & Motion
answers
Chapter 2
Key terms
 Force: A push
 Net
or pull
Force: the combination of all of the
forces acting on an object
 Balanced
force: two or more equal forces
whose effects cancel each other out and
will not change the moron of the object,
the net force will be zero
 Unbalanced
force: two or more unequal
forces acting on an object, the net force will
be greater than zero and will cause a
change in motion of the object
 Newton’s
First Law of motion if there is not net force
acting on an object the object will remain at rest, or if an
object is in motion it will continue moving in a straight line
with a constant speed
 Friction the force that acts to resist sliding between two
objects, causes an object to slow down
Question 1
1.
If the net force on an object is zero, were the forces
balanced or unbalanced? How can you tell?
The forces are balanced. Unbalanced
forces cause motion and will have a net force
greater than Zero
Question 2
 In
the following situations, are the forces balanced or
unbalanced?
a. You push a table and it moves
 Unbalanced, the
table MOVES
b. You push a chair at a constant rate in a straight line

Balanced, the box is moving at a CONSTNAT speed or
velocity
c. You stop pushing a box and it stops
 Unbalanced, the
box MOVES
Compare and contrast balanced
and net forces
 Compare
and contrast friction and force
 friction is a type of force between two surfaces in
contact.
force is an action that causes a body of mass to
move.