{"id":245350,"date":"2024-08-19T16:00:43","date_gmt":"2024-08-19T08:00:43","guid":{"rendered":"https:\/\/thepiquelab.com\/blog\/?p=245350"},"modified":"2025-10-21T18:50:40","modified_gmt":"2025-10-21T10:50:40","slug":"2015-nanyang-primary-school-nyps-p5-sa2-examination-paper-analysis","status":"publish","type":"post","link":"https:\/\/thepiquelab.com\/blog\/2015-nanyang-primary-school-nyps-p5-sa2-examination-paper-analysis\/","title":{"rendered":"2015 Nanyang Primary School (NYPS) P5 SA2 Examination Paper Analysis"},"content":{"rendered":"

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Introduction<\/strong><\/p>\n

Welcome back to our\u00a0Examination Paper Analysis<\/strong>\u00a0series!<\/p>\n

In this article, we will be analysing a question on the topic of Forces<\/strong> from the 2015 Nanyang Primary School (NYPS) P5 SA2 Examination Paper<\/strong>. We will also be discussing how to phrase your answers the right way for questions involving energy conversions, and the different effects and types of Forces.<\/p>\n

<\/p>\n\n

Let’s Take A Look At This Question<\/h2>\n

\"\"<\/p>\n

Source: Nanyang Primary<\/span> School \u2013 2015 P5 SA2 Examination Paper [Q44]<\/span><\/em><\/p>\n

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Read Also:<\/h3>\n
    \n
  1. Ultimate Science Practice Series: Reproduction (Practice Questions & Explainer Videos)<\/strong><\/a><\/strong><\/li>\n
  2. Cells: How Are Cell Parts Tested In Examinations?<\/strong><\/a><\/li>\n<\/ol>\n<\/div>\n

    Let’s Analyse Part (A)
    \"\"<\/strong><\/h2>\n

    Source: Nanyang Primary<\/span> School \u2013 2015 P5 SA2 Examination Paper [Q44]
    <\/span><\/em><\/p>\n

    Part (a) is asking us to explain why the marble stopped rolling. First of all, we have to understand why the marble even rolled in the first place. The marble rolled because there was a <\/span>push force<\/span><\/strong> applied to it.<\/span><\/p>\n

    \"\"<\/p>\n

    When the marble is pushed, the marble starts moving. What kind of energy will this marble possess? Kinetic energy!<\/strong><\/p>\n

    We learned that kinetic energy is a form of movement energy<\/strong>. Throughout the ball\u2019s movement, we also learned that kinetic energy is going to be converted into two other forms of energy.<\/p>\n

    Do you know what those two other forms of energy are? The first one is heat energy<\/strong> and the other one is sound energy<\/strong>.
    \"\"<\/p>\n

    Why is kinetic energy converted into heat energy and sound energy? It is because of this force called friction<\/strong>.<\/p>\n

    \n

    \ud83d\udccc\u00a0Energy Conversion Due To Friction<\/strong> \ud83d\udccc<\/p>\n

    Because of friction, kinetic energy is converted into heat<\/strong> and sound<\/strong>.<\/p>\n<\/blockquote>\n

    Eventually, there will no longer be any kinetic energy, so the marble will come to a stop.<\/p>\n

    \"\"<\/p>\n

    <\/p>\n

     <\/p>\n

    <\/p>\n

    Suggested Answers For Part (A)<\/h2>\n

    If we were to use energy<\/strong> to explain:<\/p>\n

    \u201cAll of the kinetic energy<\/strong> of the marble had been converted<\/strong> into heat energy<\/strong> and sound energy<\/strong>. The marble no longer possessed any kinetic energy and stopped rolling.\u201d<\/p>\n

    On the other hand, we can strictly use forces<\/strong> to explain our answer:<\/p>\n

    \u201cThere was friction<\/strong> involved. Because of the friction between the surface of the marble and the floor, the marble came to a stop.\u201d<\/p>\n

    <\/p>\n

    Let’s Analyse Part (B)<\/h2>\n

    \"\"<\/p>\n

    Source: Nanyang Primary<\/span> School \u2013 2015 P5 SA2 Examination Paper [Q44]<\/span><\/em><\/p>\n

    If we want to make the marble roll over a longer distance, there are a few things we can do.<\/p>\n

    One way we can make the marble roll over a longer distance is to increase the push force that’s acting on the marble. We can exert a greater push force on the marble, and this would allow the marble to possess more kinetic energy.<\/p>\n

    \"\"<\/p>\n

    What else can we do if we don’t want to push the marble with greater force?<\/p>\n

    Ask yourself: what is stopping the marble from moving? As discussed earlier, there is kinetic energy being converted into heat and sound energy because of this force called friction.<\/p>\n

    If we want the marble to move for a longer distance, another thing we can do is to reduce the amount of friction present. We can add lubricants<\/strong>.<\/p>\n

    A good example of a lubricant would be oil<\/strong>. Oil is a lubricant, and it will reduce friction.<\/p>\n

    \n

    \ud83d\udccc Remember This When Using The Keyword \u2018Friction\u2019<\/strong> \ud83d\udccc<\/p>\n

    When using the keyword friction<\/strong>, we must always remember to write \u201cbetween [one thing] and [something else]\u201d.<\/p>\n<\/blockquote>\n

    In this case, the friction between the marble and the floor is reduced.<\/p>\n

    \"\"<\/p>\n

    If we don’t want to use oil, another substance that can help reduce friction is a substance that can smoothen surfaces.<\/p>\n

    If you’re thinking about powder<\/strong>, you are right! What we can do is to put powder on the floor.<\/p>\n

    \"\"<\/p>\n

    When we put powder<\/span> on the floor, it will eventually become smoother and will help reduce friction between the surface of the marble and the floor as well.<\/p>\n

    Suggested Answer For Part (B)<\/h2>\n
      \n
    1. Push the marble with a greater force.<\/li>\n
    2. Apply oil on the floor. Oil acts as a lubricant, reducing the friction between the surface of the marble and the floor.<\/li>\n
    3. Add powder on the floor to reduce the friction between the surface of the marble and the floor. This is because powder makes the floor smooth.<\/li>\n<\/ol>\n

      <\/p>\n

      <\/p>\n

      <\/p>\n

      <\/p>\n

      <\/p>\n

      Let’s Analyse Part (C)<\/h2>\n

      \"\"<\/p>\n

      Source: Nanyang Primary School \u2013 2015 P5 SA2 Examination Paper [Q44]<\/span><\/em><\/p>\n

      \"\"<\/p>\n

       <\/p>\n

      What we have learned so far in terms of the effects of forces is that they’re different<\/strong> from the types of forces.<\/p>\n

      Let\u2019s do a quick recap of the four types of forces that you have learnt so far:<\/p>\n