PSLE Science Forces Worked Examples for 2026 (Singapore MOE Syllabus) — with Answers and Explanations

Quick answer

Seeing a PSLE Science Forces question that looks nothing like your practice papers can make your heart sink. But don't worry! Once you learn how to break down these questions into smaller steps, they become much easier to handle. Let's go through some common types of forces questions and learn exactly what to do.

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What you need to know

Forces are pushes or pulls that can change the shape, speed, or direction of an object. In PSLE Science, you’ll often need to identify different types of forces, such as gravity, friction, and magnetic forces, and understand how they affect objects.

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Understanding Forces in PSLE Science

When it comes to forces in PSLE, breaking down the topic into smaller, manageable parts can make a big difference. Many students get stuck because they can't picture how the forces act in real-life situations. A simple trick I teach my students is to imagine a story or scene. For example, think of a game of tug-of-war to understand balanced and unbalanced forces.

Types of Forces

1. Gravity: Pulls objects towards the Earth.
2. Friction: Slows down or stops moving objects.
3. Magnetic Force: Attraction or repulsion between magnets.

Common mistakes students make

1. Confusing different forces: Many students mix up friction and gravity. Remember, gravity pulls down, while friction stops or slows down movement.

2. Not visualising the problem: Without picturing the scenario, it’s easy to misidentify the forces at play.

3. Overlooking units: Forgetting to include or convert units can lead to lost marks.

How to fix these mistakes

• Draw simple diagrams: Picture the situation to better understand how forces act.
• Label your units clearly: Always check that your units are correct and consistent.

Exam tip

In the exam, read the question carefully to identify all the forces involved. Allocate your time wisely—spend a few moments drawing a quick sketch if it helps you see the problem better. Remember, clear and neat presentation can help examiners follow your reasoning.

Worked examples

Question 1: Identifying Forces

A boy pushes a toy car on a table. What are the forces acting on the car?

Solution

Step 1: Identify the forces.
Why: Knowing which forces are involved helps you understand their effects on the object.

• Gravity pulls the car down.
• Friction between the car and table slows it down.
• The push from the boy moves the car forward.

Step 2: Draw a simple diagram.
Why: Visualising the forces helps to see how they interact.

• Use arrows to show the direction of each force.

Question 2: Balanced and Unbalanced Forces

Two children are playing tug-of-war. Child A pulls with a force of 50 N, and Child B pulls with a force of 60 N. Who will win?

Solution

Step 1: Compare the forces.
Why: Knowing which force is stronger tells you which direction the object will move.

• Child B's force is greater than Child A's.

Step 2: Conclude the result.
Why: Understanding the result helps you see the outcome of unbalanced forces.

• Child B wins because the force is stronger.

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Quick check

1. What force keeps us on the ground?
2. What happens when friction is removed?
3. Why do we draw diagrams in force questions?

Answers

1. Gravity
2. Objects move faster or don't stop.
3. To visualise and understand force interactions.

Quick summary

• Forces include gravity, friction, and magnetic forces.
• Common mistakes: confusing forces, not visualising, and missing units.
• Use diagrams to see how forces act.
• Check and label units carefully.
• Practice with similar questions to gain confidence.

FAQ

Q: How do I know which force to use in a question?
A: Look for clues in the question, like movement or objects involved, to identify relevant forces.

Q: Why do forces questions look different each time?
A: They test your understanding of concepts in various scenarios, not just memorised answers.

Q: How can I improve my force diagrams?
A: Keep them simple, use arrows for direction, and label each force clearly.

Q: What if I get stuck on a forces question in the exam?
A: Breathe first, break the question into smaller parts, and draw a quick sketch to visualise the problem.

Practise with free question sets

Work through more exam-style questions with answers and step-by-step solutions:

• 35+ Primary 6 PSLE Forces Practice Questions for 2026 (based on Singapore MOE Syllabus)
• Topic study hub

Want unlimited similar questions with AI marking? Practise on Tutorly.sg/app

Related Topics You Should Learn Next

• PSLE Science Forces: Avoid These Common Mistakes
• PSLE Science Forces: Simple Steps to Secure Your Marks
• PSLE Science: Understanding Forces Without Losing Marks
• PSLE Science Forces: Why Students Struggle and How to Fix It
• Topic Cluster Hub: PSLE Science Forces

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