MOTION 1
Australian Curriculum content descriptions
The motion of objects can be described and predicted using the laws of physics (ACSSU229)
Elaborations

LEARNING GOAL 1 

Definition of SCALAR & VECTOR


Check Your Understanding.
To test your understanding of this distinction, consider the following quantities listed below. Categorise each quantity as being either a vector or a scalar. Quantity Category a. 5 mSee Answer b. 30 m/sec, EastSee Answer c. 5 miles, NorthSee Answer d. 20 degrees CelsiusSee Answer e. 256 bytesSee Answer f. 4000 CaloriesSee Answer 
ACTIVITY:
Paper Airplane competition. The longest displacement wins.


Apply your understanding:
To test your understanding of this distinction, consider the motion depicted in the following examples.
EXAMPLE 1:
A physics teacher walks 4 meters East, 2 meters South, 4 meters West, and finally 2 meters North. Calculate: a) The distance travelled. b) The displacement of the teacher. 
ANSWER
....click me to check if you are correct. 
EXAMPLE 2:
Use the diagram to determine the resulting displacement and the distance traveled by the skier during these three minutes. Then click HERE to see the answer. 

EXAMPLE 3:
Look at the distance/time graph. a) If a car starts at distance 0 and time 0, how far has it travelled in 10 minutes? b) What is happening at time 2 min to time 8 min? c) What is the displacement of the car? d) If it takes the car another 4 minutes to go back to distance 0,

ACTIVITY:
LESSON 2
Definition of SPEED 

 Speed is the distance traveled per unit of time. It is how fast an object is moving.
 SPEED = DISTANCE (SCALAR) / TIME
 Speed is a scalar quantity. It doesn't have a direction.
Questions:
Type 1. Speed and distance formula: Distance/Time
Average Speed = Total Distance Travelled/Total Time Taken
Find more problems with solutions here.
Type 1. Speed and distance formula: Distance/Time
 A car travels a distance of 500 km in 10 hours. What is its speed in km/hr?
 Billy can run a distance of 100 m in 20 seconds. Find the speed of Billy in m/s.
Average Speed = Total Distance Travelled/Total Time Taken
 Sarah drives first 120 km in 2 hrs and next 180 km in next 4 hrs. What is her average speed for the entire trip in km per hour?
 A cyclist travels at 10 km/hr for 2 hours and then at 13 km/hr for 1 hour. Find his average speed.
Find more problems with solutions here.
ACTIVITY:

Definition of VELOCITY

IMPORTANT SYMBOLS IN PHYSICS
d or x = distance
s (small caps) = displacement S (large caps) = speed V = velocity. (U or Vi = initial velocity; V or Vf = final velocity) a = acceleration t = time 
 Velocity is a measure of how fast something moves in a particular direction.
 VELOCITY = DISPLACEMENT (VECTOR) / TIME
 To define it needs both magnitude and direction.

This video has a major error in its definitions.
Can you spot it? ....apart from the incorrect SI Units of mph 
Speed and Velocity PROBLEMS:
EXTENSION STUDENTS: Bribie SHS
Pearson 10 Textbook pp.257, 258
Answer questions: 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 14, 15
Check your answers (click me)
Fun Interactive resource:
https://resources.hwb.wales.gov.uk/VTC/201011/science/science2motion/eng/starthere.html
LESSON 3
Definition of ACCELERATION


ADVANCED STUDENTS: EQUATIONS OF MOTION. http://thescienceclassroom.org/physics/motionin1d/theequationsofmotion/