Physics 20

- Describe motion in terms of displacement, velocity, acceleration, and time.

- Define displacement, velocity, and acceleration qualitatively and quantitatively.

- Operationally define scalar and vector quantities, and compare and contrast them.

- Explain uniform and uniformly accelerated motion qualitatively and quantitatively using written descriptions, numerical data, and graphs.

- Interpret quantitatively the motion of one object relative to another using displacement and velocity vectors.

- Explain two-dimensional motion in a horizontal or vertical plane quantitatively using vector components.

- Formulate questions about observed relationships and plan investigations of questions, ideas, problems, and issues. - Identify, define, and delimit questions to investigate (e.g., relationships among displacement, velocity, acceleration, and time) (IP–NS1). - Explain why distances are measured in different units (e.g., as the crow flies, days of travel, mileage from city centre to city centre, light years).

- Explain that the goal of science is knowledge about the natural world (NS1). - Identify common applications of kinematics, such as determining average speed for a run, bike ride, or car trip, or the acceleration required to launch an aircraft from a carrier.

- Investigate relationships among observable variables, using a range of tools and techniques to gather and record data and information. - Perform an experiment to demonstrate the relationships among displacement, velocity, acceleration, and time using available technologies; e.g., interval timers, photo gates (PR–NS2, PR–NS3) [ICT C6–4.4]. - Collect information from print and electronic sources to explain the use of kinematics concepts; e.g., the synchronization of traffic lights (PR–ST1) [ICT C1–4.1].

- Explain that scientific knowledge is subject to change as new evidence becomes apparent and as laws and theories are tested and subsequently revised, reinforced, or rejected (NS4) - Analyze lunar free fall as illustrated in a video

- Analyze data and apply mathematical and conceptual models to develop and assess possible solutions. - Construct and analyze graphs to show relationships among displacement, velocity, acceleration, and time for uniform and uniformly accelerated motion (AI–NS2) [ICT C7–4.2]. - Relate acceleration to the slope of, and displacement to the area under, a velocity-time graph (AI–NS2, AI–NS6) [ICT C7–4.2]. - Solve quantitative projectile motion problems near Earth’s surface, ignoring air resistance (AI–NS3) [ICT C6–4.1]. - Analyze uniform motion using computer simulations (AI–NS3) [ICT C6–4.4].

- Explain that technological development includes testing and evaluating designs and prototypes against established criteria (ST5d) [ICT C6–4.5]. - Investigate applications of kinematics principles, such as determining appropriate airport runway length, designing merging lanes, or timing traffic lights.

- Work collaboratively to address problems, applying scientific skills and conventions to communicate information and assess results - Use appropriate Système international (SI) units, including fundamental and derived units, and significant digits (CT–NS2) - Use numeric, symbolic, graphical, and linguistic representations to communicate ideas, plans, and results (CT–NS2) - Use delta notation correctly to describe changes in quantities (CT–NS2)