1.  View the Google Slides below

2. (If needed) Visit to identify the definitions and units for displacement, speed and velocity

• http://webs.mn.catholic.edu.au/physics/emery/Unit_1_motion_and_energy.htm#Motion from information under the heading Motion.

3. Read 

• https://www.physicsclassroom.com/class/1DKin/Lesson-1/Distance-and-Displacement 

• https://www.physicsclassroom.com/class/1DKin/Lesson-1/Speed-and-Velocity (Paragraphs 1&2)

• EXTENSION https://www.khanacademy.org/science/physics/one-dimensional-motion/displacement-velocity-time/a/what-is-displacement  (ignore the quantities if they are confusing, they are not needed here.)

4. Complete Check Your Understanding at the bottom of the page.

5. Draw simple Venn diagrams to compare and contrast the definitions, descriptions and units for:

• distance/displacement

• speed/velocity

For Year 11 Physics:

Speed is a scalar quantity. The average speed is found by dividing the total distance travelled by the total time taken for the motion. It is usually measured in m/s.

Velocity is a vector quantity. The average velocity is found by dividing the total displacement by the total time taken for the motion. It is usually measured in m/s, but will also have a direction.

View videos:

1. From https://www.physicsclassroom.com/class/1DKin/Lesson-1/Scalars-and-Vectors#:~:text=These%20two%20categories%20can%20be,a%20magnitude%20and%20a%20direction.

• Read and record definitions

•  Complete Check Your Understanding

2. EXTENSION Khan Academy https://www.khanacademy.org/science/physics/one-dimensional-motion/displacement-velocity-time/v/introduction-to-vectors-and-scalars?modal=1  [1.38]

Points to note for a Distance-Time graph:

• Straight line = constant speed

• Horizontal line = no motion

• Curved line = change in speed (acceleration)

• Gradient = speed

1. Carry out simulation from Stile  CLASS CODE  KJJR9W

2. https://stileapp.com/au/institutions/551/subjects/272471/activities/12669562/teach 

3. Carry out Practical 1.4a

1. View Google Slides below

2. (If needed) View video Interpreting Distance-Time Graphs https://www.youtube.com/watch?v=L9FlskviRBc  [5.12]

3. Complete worksheets  on Google Slides below.

• View video https://study.com/academy/lesson/instantaneous-speed-definition-formula-example.html [3.29]

• Read and make Cornell notes Calculating Average Speed and Average Velocity  https://www.physicsclassroom.com/class/1DKin/Lesson-1/Speed-and-Velocity 

• Complete Worksheet (download from below)

• EXTENSION: View https://www.khanacademy.org/science/physics/one-dimensional-motion/displacement-velocity-time/v/calculating-average-velocity-or-speed [11.45]

1. View video: Calculating slope of a line of best fit https://www.youtube.com/watch?v=KYnO5KfLH8I 

2. Complete the task on the Google Slides below. Collect a Worksheet for this.

EXTENSION Complete the task on the Google Slides below, using Excel. (https://www.youtube.com/watch?v=Kjj7q_8Eymk )

1. Read the information below.

2. Interact with the Google Slides below.

Acceleration is defined as the rate of change of velocity, and is an example of a vector quantity (magnitude and direction). Acceleration occurs when an object:

• increases speed - becoming more positive acceleration, (a)

• decreases speed - becoming more negative acceleration (-a),  commonly called deceleration

• changes direction (in the 3 dimensions)

The types of acceleration are: 

• Uniform acceleration: When an object is travelling in a straight line with a change in velocity at equal intervals of time, then the object is said to be in uniform acceleration. Free falling of an object is an example of uniform acceleration.

• Non-uniform acceleration: When an object is travelling with a change in velocity but not at the equal intervals of time is known as non-uniform acceleration. A bus moving or leaving from the bus stop is an example of non-uniform acceleration.

• Average acceleration is determined over a  finite time interval— something with a beginning and an end. The velocity at the beginning of this interval is called the initial velocity, represented by the symbol v0 (vee nought), and the velocity at the end is called the final velocity, represented by the symbol v. Average acceleration is calculated from two velocity measurements.

a =  ∆v /∆t

 =  v − v0 / ∆t

• Instantaneous acceleration is measured over a time interval infinitely small or infinitesimal — having no duration or extent whatsoever. It's a mathematical ideal that can can only be realised as a limit. 

a =  v /t

Gravitational acceleration

One special type of acceleration is given its own symbol, g, and this is acceleration due to the attractive  (pulling) force of gravity. 

Near Earth's surface, gravitational acceleration is approximately 9.81 m/s2, which means that, ignoring the effects of air resistance, the speed of an object falling freely will increase by about 9.81 metres per second every second. ... The precise strength of Earth's gravity varies depending on location.

Acceleration has units of metres per second squared: m/s2  or  ms-2

Extension

3. Read 

• Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass. The most extreme example of this curvature of spacetime is a black hole, from which nothing—not even light—can escape once past the black hole's event horizon. However, for most applications, gravity is well approximated by Newton's law of universal gravitation, which describes gravity as a force, which causes any two bodies to be attracted to each other, with the force proportional to the product of their masses and inversely proportional to the square of the distance between them. 

• Fis proportional to mass / distance squared  

4. View video:

1. Come to me for a workshop

2. Complete practice problems below. 

EXTENSION

Equations of Uniformly Accelerated Motion

By starting with the basic definitions given above:

                          v =  u + at

s =  ut + 1/2at2  

v2 = u2 + 2as

where u = initial velocity, v = final velocity, a = acceleration, s = displacement and t = time.  These three equations may be used whenever the acceleration is uniform (constant or zero) and the motion is considered in one dimension.  The correct sign must accompany each value as the quantities (except time) are vectors.

When using equations, first write down the values of the quantities you have been given.  Then identify which quantity you have been asked to calculate.  These steps will help you identify which equation is most appropriate to use.  A diagram of the situation is also usually advisable.  It helps with the thought process by allowing you to organise your data.  A diagram will help to ensure that you get the sign of your vector quantities correct.  For example, if you know that the initial velocity is 10m/s East and that the acceleration is 2ms-2 West, then u = +10m/s and a = -2ms-2.

Complete SUVAT Equations Worksheet below.

Complete Review Notes from Slides

Complete Review Qs below.