1. Balanced and Unbalanced Forces: Page 79 QUESTION: If you apply a force to an object will it always move? OBJECTIVE: Students will be able to explain the effect of balanced and unbalanced forces on a object. VOCABULARY: balanced forceunbalanced force

2. Balanced and Unbalanced Forces Write these questions onto page 79 SKIP ONE LINE BETWEEN EACH QUESTION 1.What happens when balanced forces are applied to an object? 2.What happens when unbalanced forces are applied to an object?

3. What’s a balanced force?balanced force Forces are balanced when all the forces are added together and the net force is zero. Look at the diagram below to see balanced forces. When balanced forces are applied to an object, the objects motion does not change.

4. What’s an unbalanced force?unbalanced force Forces are unbalanced when all the forces are added together and they do not have a net force is zero. Look at the diagram below to see unbalanced forces. When unbalanced forces are applied to an object, the objects motion changes in some way.

5. Calculate the Forces Look at the diagram below. Are the forces balanced or unbalanced?Unbalanced. In what direction would the object move?Up

6. Balanced and Unbalanced Forces Watch the three videos to see real-life examples of balanced and unbalanced forces. Video 1Video 2Video 3

7. Balanced and Unbalanced Forces: page 79 Check that the answers to these questions are in your notes. 1.What happens when balanced forces are applied to an object? 2.What happens when unbalanced forces are applied to an object?

8. VOCABULARY Balanced force- forces that equal a net force of zero. Unbalanced force- forces that equal a nonzero net force.