An object at rest or moving uniformly (in a straight line) will remain so unless acted upon by an external unbalanced (net) force (Newton’s First Law, The Law of Inertia). (e.g., We wear seatbelts because our body has a tendency to keep moving when the vehicle stops.)
- Physical Science
- Everything is constantly moving; motion is relative, but the motion of an object can be described and predicted by tracing and measuring its position over time.
Students demonstrate their understanding of Motion by