1. What is a force? What is a balanced force? What is an unbalanced force?

2. Label the following as balanced or unbalanced

3. What is Friction? List the three types of Friction 1. 2. 3.

4. Label the pictures into sliding, rolling, or fluid friction. Draw an arrow showing the direction of the friction.

5. Label the following as sliding, rolling, and fluid friction. Draw an arrow showing the direction of the friction.

6. Label the following sliding, rolling, and fluid friction. Draw an arrow showing the direction

8. Use the words in each group to write a sentence that describes friction. Make sure that each sentence includes the word friction. 1.Direction: Motion 2.Surfaces: Touching 3.Amount: Surfaces:Materials

9. 4.Sliding:Solid 5.Wheels: Ball bearings: Rolling 6.Fluid:Liquid:Gas

10. Solve the following problems on how forces combine.