Forces can be either balanced or unbalanced. Balanced forces are equal in size but opposite in direction, resulting in no change in an object's motion. Unbalanced forces are not equal or opposite and will cause an object to change its motion, either starting to move, changing speed, or changing direction. The net force of multiple forces acting on an object is calculated by subtracting the magnitudes of opposing forces and determining the direction of the largest remaining force.

1. Balanced and Unbalanced Forces Dayna Lee Martínez STARS - USF Maniscalco Elementary

2. What is a force? A force is a push or pull that causes an object to move, stop, or change direction In physics a force is anything that makes an object accelerate

3. Force Forces come in pairs Forces have a magnitude and a direction 5N, north (up) Magnitude: 5N Direction: north (up)

4. Balanced and Unbalanced Forces Forces occur in pairs and they can be either balanced or unbalanced

5. Balanced Forces Balanced forces do not cause change in motion They are equal in size and opposite in direction

6. Unbalanced Forces An unbalanced force always causes a change in motion When unbalanced forces act in opposite directions you can find the net force Net force Magnitude The difference between the two forces Direction Direction of the largest force

7. Unbalanced Forces 3 N, right – 6 N, left = 3N, left

8. Unbalanced Forces 4 N, left – 10 N, right = 6N, right

9. Unbalanced Forces 5 N, right + 10 N, right = 15N, right