1. Warm Up: 1. Use the word constant in a sentence, as you would use it in science. 2. Use the word “constantly” in a sentence as you would use in every day life.

2. Right Side: Vector Notes Objective: I can use a vector to tell the direction and magnitude of a force.

3. A force can be shown with a vector. A vector is a line with an arrow and a dot. The dot shows where the force begins. The length of the arrow shows the amount (magnitude) of force. The arrows show the direction of the force. A small force to the left. A large force to the right.

4. Balanced and Unbalanced Forces Right side Net force- is the combination of all the forces acting on an object Add the arrows if they go in the same direction Subtract the arrows if they go in the opposite direction

6. -Balanced Forces – The net force is zero – They DO NOT cause a change in motion of an object – Evidence: Object may be at rest (not moving) or moving at a constant velocity. Unbalanced Forces – The net force does NOT equal zero – They DO cause an object’s motion to change. » Ex of Evidence : » A. Cause a change in speed and or direction B. Cause a not moving object to start moving C. Cause a moving object to stop moving

7. Left side: Illustrated Force Notes 2 These forces are balanced because they are not changing motion. These forces are unbalanced because _______ is causing _______ to move ____________. (Draw a picture showing balanced forces with force arrows) (Draw a picture showing unbalanced forces with force arrows)