the applied force and the time interval that the force is applied to the object. Everyday examples of the impulse/momentum relationship include: the use of airbags in cars; time of contact and in “follow-through” throwing, catching, kicking, and hitting objects in sports; bending your knees when you jump from a height to the ground to prevent injury. SC.3.2 Forces and Motion: Understand the relationship between forces and motion. What Learner Should Know, Objectives Teaching Notes and Resources Understand, and Be Able to Do SC.3.2.1 Explain how Recognize that the weight of Introduction to Gravity gravitational force affects an object is a measure of the the weight of an object force of gravity and is the and the velocity of an product of its mass and the Easy Weight Comparison Activity object in free fall. acceleration due to gravity: Fg = mg With negligible air resistance, Comparison Between Mass and Weight explain acceleration due to gravity as an example of uniformly changing velocity: Simulator g= 9.8 m/s2 Relate the presence of air resistance to the concept of Acceleration Due to Gravity terminal velocity of an object in free fall. Air Resistance Example of Air Resistance Explanation SC.3.2.2 Classify frictional Identify friction as a force that Friction Lesson Plan with Simulation forces into one of four opposes motion of an object. types: static, sliding, (Review from middle school.) rolling, and fluid. Classify the frictional forces Friction Lab present in a situation such as a book resting on a table (static), Friction Wiki: a box pushed across the floor (sliding), a ball rolling across the floor (rolling), a boat Rolling Friction moving through a river (fluid), or an object in free-fall (air Sliding Friction Lab resistance). Friction Lab SC.3.2.3 Explain forces Explain the property of inertia Introduction to Newton’s Laws of Motion using Newton’s three laws as related to mass - the motion of motion. of an object will remain the same (either at rest or moving at a constant speed in a Law Explanation Video straight line) in the absence of unbalanced forces; if a change in motion of an object is Balanced and Unbalanced Forces
the applied force and the time interval that the force is applied to the object. Everyday examples of the impulse/momentum relationship include: the use of airbags in cars; time of contact and “follow-through” in throwing, catching, kicking, and hitting objects in sports; bending your knees when you jump from a height to the ground to prevent injury. SC.3.2 Forces and Motion: Understand the relationship between forces and motion. Objectives What Learner Should Know, Understand, and Be Able to Do Teaching Notes and Resources SC.3.2.1 Explain how gravitational force affects the weight of an object and the velocity of an object in free fall. Recognize that the weight of an object is a measure of the force of gravity and is the product of its mass and the acceleration due to gravity: Fg = mg With negligible air resistance, explain acceleration due to gravity as an example of uniformly changing velocity: g= 9.8 m/s2 Relate the presence of air resistance to the concept of terminal velocity of an object in free fall. Introduction to Gravity Easy Weight Comparison Activity Comparison Between Mass and Weight Simulator Acceleration Due to Gravity Air Resistance Example of Air Resistance Explanation SC.3.2.2 Classify frictional forces into one of four types: static, sliding, rolling, and fluid. Identify friction as a force that opposes motion of an object. (Review from middle school.) Classify the frictional forces present in a situation such as a book resting on a table (static), a box pushed across the floor (sliding), a ball rolling across the floor (rolling), a boat moving through a river (fluid), or an object in free-fall (air resistance). Friction Lesson Plan with Simulation Friction Lab Friction Wiki: Rolling Friction Sliding Friction Lab Friction Lab SC.3.2.3 Explain forces using Newton’s three laws of motion. Explain the property of inertia as related to mass - the motion of an object will remain the same (either at rest or moving at a constant speed in a straight line) in the absence of unbalanced forces; if a change in motion of an object is Introduction to Newton’s Laws of Motion Law Explanation Video Balanced and Unbalanced Forces
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