Revision on Kinematics

Kinematics Drill

How far are you willing to go to grow?

Kinematics

• I need to understand how to represent motion using

• (a) Speed-time graph

• (b) Distance-time graph

• (c) Description

Representation of Motion using Speed-time graph

(a) Gradient :it helps us find acceleration (which is the rate of change of speed)

(b) Area under graph: Finding it helps us find distance travelled by the object

Representation motion using distance time graph

Note: Gradient represents speed (which is the rate of change of distance)

Distance time graph

How distance time graph represents increasing speed

Distance time graph

How distance time graph represents decreasing speed

Distance time graph

How distance time graph represents constant speed

Quiz Time

Difficulty Level: Warrior

Multiple Choice

[Hint: a= (v-u/t) ]

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Multiple Choice

[Hint: What is the initial speed when it starts moving from rest?]

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Multiple Choice

[Hint: What formula can we use to calculate?]

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Multiple Choice

[Hint: The question is asking for acceleration when it is slowing down. How should we represent this?]

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Multiple Choice

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Multiple Choice

[Hint: The object is decelerating, so your a should be a negative value in your calculation]

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Multiple Choice

[How can our formula help us to solve this question?]

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Multiple Choice

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Multiple Choice

[Hint: Read carefully, this is a distance-time graph]

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Multiple Choice

[Whoa careful there, look at what graph this is]

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Multiple Choice

[A speed-time graph! Be careful there!]

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Multiple Choice

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Multiple Choice

[Hint: It has a positive gradient, and the gradient is getting gentler]

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Multiple Choice

[Hint: The gradient is negative, and the steepness of the gradient is getting gentler]

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Multiple Choice

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Multiple Choice

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Multiple Choice

[Look closely what graph this is!]

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Multiple Choice

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Multiple Choice

[Hint: Be careful, a distance time graph!]

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Multiple Choice

[So tricky! This is a speed time graph]

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Multiple Choice

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Multiple Choice

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Multiple Choice

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Multiple Choice

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Multiple Choice

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Multiple Choice

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Multiple Choice

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Multiple Choice

[Hint: Sketch the speed-time graph]

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Multiple Choice

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