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An object's state of motion is defined by its VELOCITY.

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Stationary

Constant velocity

Acceleration

Deceleration

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TELL A STORY OF THIS GRAPH - what is the state of motion in each section of the graph

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TELL A STORY OF THIS GRAPH - what is the state of motion in each section of the graph

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Describe the motion of this graph:

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1. Describe how to make a position-time graph.

2. What does the slope of a position-time graph represent?

3. In Graph 1 in the Figure above, what is the object’s average velocity?

4. Average velocity equals the change in position (represented by Δd) divided by the change in time (represented by Δt).

5. velocity=Δx/Δt

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<iframe src="https://www.ck12.org/assessment/tools/geometry-tool/fullscreen.html?qID=5362cf8d5aa413045ddea78c&aid=1824003&cch=physics-::-position-vs-time-graphs&eId=SCI.PHY.067&cci=3" scrolling="no" frameborder="0" width="350px" height="350px" allowfullscreen/>

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a = +

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a = -

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A velocity-time graph shows changes in velocity of a moving object over time.
The slope of a velocity-time graph represents acceleration of the moving object.

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https://www.ck12.org/assessment/ui/?test/detail/practice/physics/Velocity-vs-Time-Graphs-Practice&isPageView=true&collectionHandle=physics&collectionCreatorID=3&conceptCollectionHandle=physics-::-velocity-vs-time-graphs&ep=https://www.ck12.org/c/physics/position-vs-time-graphs/asmtpractice//Position-vs-Time-Graphs-Practice/

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Area Under Velocity Time Graphs | Forces & Motion | Physics | FuseSchool

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Application of x,v,a gradient and area under graph

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Application of x,v,a gradient and area under graph

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Worked example:

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PRACTICE GOAL

PLIX CHALLENGE

INFROMATION IN POSTS BELOW:

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PRACTICE GOAL - UNIFORM ACCELERATION ON BRAINGENIE CK12

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PRACTICE GOAL - UNIFORM ACCELERATION ON BRAINGENIE CK12

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Do 10 practice problems on acceleration by clicking the embedded link (starting with <iframe) below:

<iframe height="750" width="540" frameborder="0" src="//www.ck12.org/assessment/ui/embed.html?test/detail/5985af029616aa50e990d39b&collectionHandle=physics&collectionCreatorID=3&conceptCollectionHandle=physics-::-uniform-acceleration" ></iframe>

Then get in the game by clicking on the Preview button.

Good luck!

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ACCELERATION PLIX CHALLENGE - DO 6 QUESTIONS

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ACCELERATION PLIX CHALLENGE - DO 6 QUESTIONS

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Do the PLIX CHALLENGE by opening the embedded link (starting with <iframe) below, then click launch to start your challenge:
<iframe src="https://www.ck12.org/assessment/tools/geometry-tool/fullscreen.html?qID=53dbb2a78e0e082eabfbf86e&aid=1824188&cch=physics-::-uniform-acceleration&eId=SCI.PHY.062&cci=3" scrolling="no" frameborder="0" width="350px" height="350px" allowfullscreen/>

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Zero acceleration (stationary of constant velocity)

Positive acceleration

Negative acceleration

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EXERCISE 1.3 (ALL QUESTIONS)

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UAM EQUATIONS (UNIFORMLY ACCELERATED MOTION)

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UAM EQUATIONS (UNIFORMLY ACCELERATED MOTION)

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New school

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ANSWERS EX 1.3

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Please use this to mark your homework.

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END OF CHAPTER EXERCISE TO THE END

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Vector: A physical quantity which has both magnitude (size) and direction.
Scalar: A physical quantity which has magnitude (size) only.
Resultant vector: The single vector which has the same effect as the original vectors acting together.
Distance: Length of path travelled.
Position: Define position relative to a reference point and understand that position can be positive or negative. Know that position is a vector quantity that points from the reference point as the origin.
Displacement: A change in position.
Speed: The rate of change of distance and know that speed is a scalar quantity
Velocity: The rate of change of position or rate of displacement and know that velocity is a vector quantity.
Acceleration: The rate of change of velocity.

You must also be able to distinguish between average velocity and instantaneous velocity.

What you need to know for this section (from the SAG’s):

Graphs of Motion
For either horizontal motion or vertical motion with constant acceleration:
- Draw position vs time, velocity vs time and acceleration vs time graphs for one
dimensional motion

Interpret graphs of motion:

Determine the velocity of an object from the gradient of a position (or displacement) vs time graph

Determine the acceleration of an object from the gradient of a velocity vs time graph

Determine the displacement of an object by finding the area under a velocity vs time graph

Equations of Motion
Use equations of motion to solve problems involving either horizontal motion or vertical motion with constant acceleration.