Unit 7: Causes of Motion (Forces)
Key Learning Targets
(7.01) Describe and give examples of Newton's 1st Law. Newton's 1st Law: An object at rest or moving at constant velocity continues its current motion unless acted upon by an outside agent (force). (7.02) Given a diagram or a written description of the forces acting on an object.: a. draw a force diagram for the object b. state whether the velocity of the object is constant or changing. (7.03) State Newton's 3rd Law & apply it in situations in which you are trying to determine all the forces acting on an object. All forces come in pairs; paired forces are equal in magnitude, opposite in direction and act on separate bodies. FAB = -FBA (7.04) Use Newton's 2nd Law to qualitatively describe the relationship between m and a, F and a, m and F. (e.g., if you double the mass, the acceleration will…) (7.05) Determine the net force acting on an object by drawing a force diagram for an object given a written description of the forces acting on it. (7.06) Solve quantitative problems involving forces, mass and acceleration using Newton's 2nd Law. a. Having determined the net force (as in 7.05), and given the mass, find the acceleration. b. Continue to use the kinematical models from Unit 6 to determine the velocity or displacement of the object (once the acceleration is known). |
Activities
Balanced Forces Packet Balanced Forces Notes (front 3 pages of packet) Newton's 2nd Law Simulation Handout ***link to simulation Unbalanced Forces Packet Online Concept Builder WS
Unit 7 Review Additional Assistance 1) Common Types of Forces (the first notes we took) 2) Building the Balanced Force Model- great overview on drawing free body diagrams 3) U5 Net Force Model Notes 4) PHeT Simulators (help you to visualize the relationships between force, mass & acceleration) Review Videos 1) Newton's 3rd Law. Includes several basic examples and how to draw force diagrams (free body diagrams) 2) Teacher workshop on Newton's Third Law D. Desbian 3) Free Body Diagrams (Force Diagrams). How to draw them. Includes both balanced & unbalanced force diagrams. |