1. Force and Motion November 17 th

2. Goal  I will explain the relationship that exists among mass, force and distance traveled.

3. Who is this?

4. Tony Hawk

5. Who many of you have ever tried to skateboard?  How is it that the skateboard can move?

6. Force  A force is a push, pull, or twist on an object which causes change.  There is a force that affects us every day, does anyone know what it is called?

7. Gravity  Gravity is a force that pulls objects towards each other. The larger the object, the greater the gravitational pull.

8. Balanced Force  A balanced force shows no change.

9. Unbalanced Force  Shows change  How would a force become unbalanced or show change?

10. Motion  Motion is the change in position of an object with respect to time. This just means that time passed while the object moved; this could be a very small amount of time, like a few seconds or a large amount of time, a few hours, days, etc.

11. What do you think causes the object to slow down and eventually stop?

12. Friction  Friction is caused by two things moving against each other.

13. Experiment  We are going to be going outside and observing the playground  You will be looking for examples of unbalanced and balanced forces. You will also be looking for examples of potential and kinetic energy.  You will list these examples on your paper.  This is not play time. You are a scientist observing what is in front of you.