| Number: SC.2.P.13.In.3 | Category: Independent |
| Date Adopted or Revised: 02/08 |
Big Idea:
Forces and Changes in Motion : A. It takes energy to change the motion of objects. B. Energy change is understood in terms of forces--pushes or pulls. C. Some forces act through physical contact, while others act at a distance. Clarification for grades K-5: The target understanding for students in the elementary grades should focus on Big Ideas A, B, and C. Clarification for grades 6-8: The target understanding for students in grades 6-8 should begin to transition the focus to a more specific definition of forces and changes in motion. Net forces create a change in motion. A change in momentum occurs when a net force is applied to an object over a time interval. Grades 9-12, Standard 12: Motion - A. Motion can be measured and described qualitatively and quantitatively. Net forces create a change in motion. B. Momentum is conserved under well-defined conditions. A change in momentum occurs when a net force is applied to an object over a time interval. |