Science>Year 10>Unit 3>Checkpoint 3

Checkpoint 3

This checkpoint tests Block C: forces, Newton's First Law, Newton's Second Law, Newton's Third Law, and motion graphs.

SC5-WAM-02Lessons 11-1510 MC3 Short AnswerCheckpoint 3 of 4
CP3

Coverage

This checkpoint assesses your understanding of forces and Newton's laws of motion.

Lesson 11

Forces: contact and non-contact forces, vector nature, measuring forces.

Lesson 12

Newton's First Law: inertia, balanced forces, everyday examples.

Lesson 13

Newton's Second Law: F = ma, net force, mass and acceleration.

Lesson 14

Newton's Third Law: action-reaction pairs, identifying force pairs.

Lesson 15

Motion graphs: distance-time and velocity-time graphs, interpreting slope and area.

Checkpoint Standard Strong answers use precise scientific language and connect concepts to real-world examples.
MC Score
0 / 10
SA Score
0 / 12
Multiple Choice
Q

Test Your Understanding

UnderstandBand 3

1. A force is best described as...

AA form of energy stored in moving objects
BA push or pull acting on an object
CThe speed of an object in a given direction
DThe mass of an object multiplied by its volume
UnderstandBand 3

2. Newton's First Law states that an object at rest will stay at rest unless acted on by...

AAn unbalanced force
BGravity alone
CA magnetic field
DFriction only
UnderstandBand 4

3. Which equation correctly expresses Newton's Second Law?

AF = m / a
Ba = F + m
CF = m × a
Dm = F x a
ApplyBand 4

4. A net force of 20 N acts on a 4 kg object. What is its acceleration?

A0.2 m/s²
B5 m/s²
C16 m/s²
D80 m/s²
UnderstandBand 4

5. According to Newton's Third Law, when you push against a wall, the wall...

ADoes not push back because it is not alive
BPushes back with less force than you apply
CPushes back only if it moves
DPushes back with an equal and opposite force
UnderstandBand 3

6. The unit of force is the...

ANewton (N)
BKilogram (kg)
CMetre per second (m/s)
DJoule (J)
ApplyBand 4

7. A horizontal line on a distance-time graph indicates that the object is...

AMoving at constant speed
BAccelerating
CStationary
DMoving backwards
UnderstandBand 4

8. On a velocity-time graph, the slope of the line represents...

ADistance travelled
BAcceleration
CAverage speed
DForce applied
ApplyBand 4

9. A book sits on a table. The forces acting on the book are balanced. Which statement is correct?

AThe book will start to move sideways
BThe book is accelerating downwards
CThere are no forces acting on the book
DThe upward normal force equals the downward weight
AnalyseBand 5

10. A car travelling at 60 km/h on a straight road has its cruise control engaged. The engine force equals the total friction and air resistance. What happens to the car's speed?

AIt stays constant because the forces are balanced
BIt gradually increases because the engine is still running
CIt gradually decreases because friction is always present
DIt increases then decreases in a repeating cycle
Short Answer
✍

Short Answer Questions

UnderstandBand 3

11. State Newton's First Law of Motion and describe a real-world example where it applies. 4 MARKS

Answer in your book.
ApplyBand 4

12. A 500 kg car accelerates at 2 m/s². Calculate the net force acting on the car. Explain what would happen to the acceleration if the mass doubled while the net force remained constant. 4 MARKS

Show your working in your book.
AnalyseBand 5

13. Use Newton's Third Law to explain why a swimmer pushes backward against the water with their arms and legs to move forward. Identify at least one action-reaction pair. 4 MARKS

Answer in your book.

Review & Reflect

✓ I can explain...

  • What a force is and how forces are measured
  • Newton's First Law and the concept of inertia
  • Newton's Second Law and how to use F = ma
  • Newton's Third Law and action-reaction pairs
  • How to interpret distance-time and velocity-time graphs

⚠ I need to review...

  • Calculating net force from multiple forces
  • The relationship between mass and acceleration
  • Identifying action-reaction pairs correctly
  • Calculating distance from the area under a velocity-time graph
  • Real-world applications of Newton's laws in sport and transport

Mark checkpoint as complete

Tick when you have finished all questions and reviewed your answers.

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