 PHYSICS EXPECTATIONS -- Before we start this unit you should: know that speed is calculated using distance and time be able to set up an equation to calculate an object's speed if you know how far the object went and the time it took to get there know that the standard measure of distance in science is meters and not feet or miles know that acceleration is different than speed (even if you're not sure how or why) understand that momentum is somehow related to motion LEARNING GOALS -- Here are the LEARNING GOALS in student language: I will be able to show that VELOCITY is equal to a change of position over time during this unit I wil be able to graph DISTANCE vs TIME to determine velocity during this unit. I will be able to show how MOMENTUM depends on an object’s mass and velocity during this unit I will be able to show how FORCE depends on the MASS of an object and the ACCELERATION of an object during this unit I will be able to describe why an object will continue doing whatever it is doing unless and until it is acted upon by an UNBALANCED FORCE during this unit I will be able to show how IMPULSE is a measure of how MOMENTUM changes over time during this unit ═══════════════════════════════ Here are the LEARNING GOALS in teacher language (if you are interested), this is more for Mr W and his colleagues. ═══════════════════════════════ 1)  HS-PS2-1. Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration. [Clarification Statement: Examples of data could include tables or graphs of position or velocity as a function of time for objects subject to a net unbalanced force, such as a falling object, an object rolling down a ramp, or a moving object being pulled by a constant force.] [Assessment Boundary: Assessment is limited to one-dimensional motion and to macroscopic objects moving at nonrelativistic speeds.] 2)   HS-PS2-2   Use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system. [Clarification Statement: Emphasis is on the quantitative conservation of momentum in interactions and the qualitative meaning of this principle.] 3)  HS-PS2-3: Apply scientific and engineering ideas to design, evaluate, and refine a device that minimizes the force on a macroscopic object during a collision. [Clarification Statement: Examples of evaluation and refinement could include determining the success of the device at protecting an object from damage and modifying the design to improve it. Examples of a device could include a football helmet or a parachute.] DOCUMENTS: EXTERNAL LINKS