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    2.2 Menganalsis Gerakan Graf ( /20 X 100 %)

    Uploaded by

    Husna Adila
    The document discusses motion graphs and inertia. It provides examples of displacement-time and velocity-time graphs and asks students to describe the motion of objects based on these graphs. It also discusses the concept of inertia, including how inertia causes passengers on a bus to jerk forward and backward during sudden stops and starts. Inertia is defined as an object's resistance to changes in its motion. Mass is the measure of an object's inertia, with larger masses having greater inertia. Examples of how inertia can be used positively, such as drying an umbrella or tightening a hammer, are also provided.

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    2.2 Menganalsis Gerakan Graf ( /20 X 100 %)

    Uploaded by

    Husna Adila
    81 views6 pages
    The document discusses motion graphs and inertia. It provides examples of displacement-time and velocity-time graphs and asks students to describe the motion of objects based on these graphs. It also discusses the concept of inertia, including how inertia causes passengers on a bus to jerk forward and backward during sudden stops and starts. Inertia is defined as an object's resistance to changes in its motion. Mass is the measure of an object's inertia, with larger masses having greater inertia. Examples of how inertia can be used positively, such as drying an umbrella or tightening a hammer, are also provided.

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    The document discusses motion graphs and inertia. It provides examples of displacement-time and velocity-time graphs and asks students to describe the motion of objects based on these graphs. It also discusses the concept of inertia, including how inertia causes passengers on a bus to jerk forward and backward during sudden stops and starts. Inertia is defined as an object's resistance to changes in its motion. Mass is the measure of an object's inertia, with larger masses having greater inertia. Examples of how inertia can be used positively, such as drying an umbrella or tightening a hammer, are also provided.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    81 views6 pages

    2.2 Menganalsis Gerakan Graf ( /20 X 100 %)

    Uploaded by

    Husna Adila
    The document discusses motion graphs and inertia. It provides examples of displacement-time and velocity-time graphs and asks students to describe the motion of objects based on these graphs. It also discusses the concept of inertia, including how inertia causes passengers on a bus to jerk forward and backward during sudden stops and starts. Inertia is defined as an object's resistance to changes in its motion. Mass is the measure of an object's inertia, with larger masses having greater inertia. Examples of how inertia can be used positively, such as drying an umbrella or tightening a hammer, are also provided.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 6

    2.

    MENGANALSIS GERAKAN GRAF

    [/20 x 100 = %]

    A student is able to : 2.2.1 Plot and interpret displacement-time and velocity-time graphs 2.2.2 Deduce from the shape of a displacement-time graph when a body is: i) at rest ii) moving with uniform velocity iii) moving with non-uniform velocity 2.2.3 Determine distance, displacement and velocity from a displacement-time graph 2.2.4 Deduce from the shape of a velocity-time graph when a body is: i) at rest ii) moving with uniform velocity iii) moving with uniform acceleration 2.2.5 Determine distance, displacement and velocity and acceleration from a velocity-time graph 2.2.6 Solve problems on linear motion with uniform acceleration A: Describe the motion of an object as shown in the following motion graphs. (a) The Displacement-Time Graph Graph of s against t s/m The displacement of the object from a fixed point is .. Therefore, the velocity of the object is . 0 t/s Explanation

    s/m The gradient of the graph = ..of the object. The gradient of the graph is ., therefore the velocity of the object is . 0 t/s

    s/m The gradient of the graph .. with time. Therefore the velocity of the object . with . 0 t/s

    (b) The velocity time graph Graph of v against t v/m s-1 Velocity of object is . . The object is Explanation

    t/s v/m s-1 The object is moving with uniform

    t/s v/m s-1 The gradient of the graph = The gradient of the graph is Therefore, the acceleration of the object is t/s v/m s-1 Area under the graph = .

    t/s

    B. Describe the motion of a runner who is running in a straight line

    s/m

    25 20 15 10 5
    O 5 10 12 15

    D t/s
    t/s

    Solution : O-A A-B B-C C-D Motion of the runner Running with a uniform velocity of 3 m s-1

    C: Study the velocity-time graph.

    v/m s-1

    10

    5 D A 5 10 15 20 25
    Calculate:(i) the acceleration, a, for sections AB, BC and CD (ii) total displacement

    t/s

    2.3 UNDERSTANDING INERTIA .%] A student is able to : 2.3.1 Explain what inertia is 2.3.2 Relate mass to inertia 2.3.3 Give examples to reduce the negative effects of inertia A. Fill in the blanks or underline the correct answers 1.

    [./19 x 100 =

    When the bus stops suddenly our feet are brought to rest but due to inertia, our body tends to continue its (forward/backward) motion. This causes our body to jerk forward.(thrown forward)

    2.

    When the bus moves suddenly from rest our feet are carried (forward/backward) but Due to inertia our body tends to keep us (rest/moving) . This causes our body to fall backwards. (thrown backbards)

    1.

    The inertia of an object is the.................................. of the object to remain at ........... or if ...................... to continue its uniform motion in a straight line

    4. 5. 6.

    The mass of an object is the amount or quantity of matter contained in the object. The SI unit of mass is .. The mass of an object is wherever it is measured. It is different from .. which is affected by the . of gravity. An object with a larger mass has a .. Inertia.

    7.

    Effects of inertia B. Explain the positive effect by using the clues given.

    Clue : Drying a wet umbrella

    Clue : Pour our Tomato sauces

    Positive effect Of inertia

    Clue : Tighten the Hammer head

    Clue: Running zig-zig when chased by a bull.

    C .Match the correct explanation to each of the characteristics

    Characteristic (a) The tank which carries liquid in a lorry should be divided into smaller tanks (b) the part between the drivers seat and load should have strong steel structure (c) Safety belts (d) Airbag

    Explanation Hold the passengers to their seat during collision Prevent the driver from hitting the steering in an accident Prevent the load from being thrown to the front To reduce the effects of inertia when stopped suddenly.

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