These have been organized according to the definitions that are suggested to be introduced first.

 

1.1

• A scalar quantity only has magnitude (size) [e.g. 5 km, 10 min, 60 km/hr, etc.]

• A vector quantity has magnitude (size) and direction [e.g. 8 km NE, 10 m/s W]

• Position is the distance and direction of an object from a reference point

• Displacement is the change in position of an object

• A vector scale diagram is a diagram drawn using a specific scale.

• A directed line segment is a straight line between two points with a specific direction.

 

1.2

• The average speed of a moving object is the total distance travelled divided by the total time taken to travel that distance.

• The average velocity of an object in motion is its total displacement, or change in position, divided by the total time taken for the motion.

• A position time graph is a graph that describes the motion of an object, with position on the vertical axis and time on the horizontal axis.

• The slope (m) of a line describes its steepness.

• Rise is a vertical change between two points on a line

• Run is a horizontal change between two points on a line

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1.3

• Acceleration describes how quickly an object’s velocity changes over time (rate of change of velocity).

• A velocity-time graph is a graph that describes the motion of an object, with velocity on the vertical axis and time on the horizontal axis.

• Motion with uniform acceleration is a motion in which velocity changes at a constant rate.

• Instantaneous velocity is the velocity of an object at a specific instant in time.

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1.4

• An acceleration-time graph is a graph describing motion of an object, with acceleration on the vertical axis and time on the horizontal axis.