*Motion in a Straight Line *

**Inquiry question:**How is the motion of an object moving in a straight line described and predicted?

Students:

- describe uniform straight-line (rectilinear) motion and uniformly accelerated motion through:

- qualitative descriptions
- the use of scalar and vector quantities

- conduct a practical investigation to gather data to facilitate the analysis of instantaneous and average velocity through:

- quantitative, first-hand measurements
- the graphical representation and interpretation of data

- calculate the relative velocity of two objects moving along the same line using vector analysis
- conduct practical investigations, selecting from a range of technologies, to record and analyse the motion of objects in a variety of situations in one dimension in order to measure or calculate:

- use mathematical modelling and graphs, selected from a range of technologies, to analyse and derive relationships between
*time*,*distance*,*displacement*,*speed*,*velocity*and*acceleration*in rectilinear motion, including:

- Motion on a Plane
**Inquiry question:**How is the motion of an object that changes its direction of movement on a plane described?- Students:

- analyse vectors in one and two dimensions to:

- resolve a vector into two perpendicular components
- add two perpendicular vector components to obtain a single vector

- represent the distance and displacement of objects moving on a horizontal plane using:

- vector addition
- resolution of components of vectors
- describe and analyse algebraically, graphically and with vector diagrams, the ways in which the motion of objects changes, including:

- velocity
- displacement

- describe and analyse, using vector analysis, the relative positions and motions of one object relative to another object on a plane
- analyse the relative motion of objects in two dimensions in a variety of situations, for example:

- a boat on a flowing river relative to the bank
- two moving cars
- an aeroplane in a crosswind relative to the ground