30 Newtons Laws of Motion Quiz Questions and Answers

Newton’s laws of motion are fundamental principles in classical mechanics, formulated by Sir Isaac Newton in the late 17th century. These laws describe the relationship between the motion of an object and the forces acting upon it. They were groundbreaking at the time and laid the foundation for the study of mechanics, which governs how objects move and interact with one another.

In this article

• Part 1: 30 Newton’s Laws of Motion quiz questions & answers
• Part 2: Download Newton’s Laws of Motion questions & answers for free
• Part 3: Free online quiz creator – OnlineExamMaker

Part 1: 30 Newton’s Laws of Motion quiz questions & answers

1. Newton’s First Law of Motion states that an object will remain at rest or move in a straight line at a constant speed unless acted upon by a:
a) Balanced force
b) Unbalanced force
c) Frictional force
d) Centripetal force
Answer: b) Unbalanced force

2. Which law describes the relationship between an object’s mass, acceleration, and force applied to it?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) None of the above
Answer: b) Newton’s Second Law

3. According to Newton’s Second Law, the acceleration of an object is directly proportional to the net force applied and inversely proportional to its:
a) Velocity
b) Mass
c) Displacement
d) Volume
Answer: b) Mass

4. When a net force is applied to an object in the same direction as its motion, the object will:
a) Speed up
b) Slow down
c) Stop
d) Change direction
Answer: a) Speed up

5. According to Newton’s Third Law, for every action, there is an equal and opposite:
a) Reaction
b) Force
c) Acceleration
d) Momentum
Answer: a) Reaction

6. A soccer ball is kicked, causing it to move forward. What force propels the ball forward?
a) Gravity
b) Friction
c) Inertia
d) The person kicking the ball
Answer: d) The person kicking the ball

7. A car moving at a constant speed on a straight road is an example of which law of motion?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) None of the above
Answer: a) Newton’s First Law

8. Which law of motion is also known as the “Law of Inertia”?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) None of the above
Answer: a) Newton’s First Law

9. When you push a book across a table, the force of friction acts in the:
a) Same direction as your push
b) Opposite direction of your push
c) Perpendicular direction to your push
d) Diagonal direction to your push
Answer: b) Opposite direction of your push

10. According to Newton’s Third Law, if a truck collides with a car, which vehicle experiences a greater force?
a) The truck
b) The car
c) Both experience the same force
d) It depends on the speed of each vehicle
Answer: c) Both experience the same force

11. In the formula F = ma, what does ‘F’ represent?
a) Velocity
b) Mass
c) Acceleration
d) Force
Answer: d) Force

12. An object with a mass of 2 kg experiences an acceleration of 5 m/s². What is the net force acting on the object?
a) 2.5 N
b) 5 N
c) 7.5 N
d) 10 N
Answer: c) 7.5 N

13. If you exert a force of 20 N on an object with a mass of 4 kg, what will be its acceleration?
a) 5 m/s²
b) 16 m/s²
c) 20 m/s²
d) 80 m/s²
Answer: a) 5 m/s²

14. According to Newton’s First Law, an object at rest will remain at rest unless acted upon by an external force. What is the term used to describe this property?
a) Velocity
b) Inertia
c) Acceleration
d) Momentum
Answer: b) Inertia

15. If an object is moving at a constant velocity, what can you conclude about the net force acting on it?
a) The net force is zero
b) The net force is constant
c) The net force is increasing
d) The net force is decreasing
Answer: a) The net force is zero

Part 2: Download Newton’s Laws of Motion questions & answers for free

16. When an object’s velocity decreases over time due to an unbalanced force, what term describes this change?
a) Acceleration
b) Deceleration
c) Inertia
d) Conservation
Answer: b) Deceleration

17. Which of Newton’s laws is often referred to as the “Action-Reaction” law?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) None of the above
Answer: c) Newton’s Third Law

18. An astronaut weighs 500 N on Earth. What will be the astronaut’s weight on the Moon where the acceleration due to gravity is one-sixth of Earth’s?
a) 30 N
b) 83.33 N
c) 100 N
d) 500 N
Answer: b) 83.33 N

19. If a ball is thrown vertically upward, what happens to its acceleration at the highest point of its trajectory?
a) It becomes zero
b) It becomes infinite
c) It remains constant
d) It fluctuates
Answer: a) It becomes zero

20. Which of the following examples best illustrates Newton’s Third Law of Motion?
a) A car moving at a constant speed on a straight road
b) A rocket launching into space
c) A person jumping off a diving board
d) A ball rolling down a hill
Answer: c) A person jumping off a diving board

21. If a force of 20 N is applied to an object with a mass of 5 kg, what will be the resulting acceleration?
a) 0.4 m/s²
b) 4 m/s²
c) 20 m/s²
d) 100 m/s²
Answer: b) 4 m/s²

22. An ice skater pushes against a wall, causing herself to move away from it. According to Newton’s Third Law, what is the reaction force?
a) Friction between the skater’s feet and the ice
b) The push from the skater’s feet against the wall
c) Gravity pulling the skater downward
d) The wall pushing back against the skater
Answer: d) The wall pushing back against the skater

23. What is the weight of a 10 kg mass on Earth, where the acceleration due to gravity is approximately 9.8 m/s²?
a) 98 N
b) 100 N
c) 108 N
d) 196 N
Answer: a) 98 N

24

. A person pushes a box across a floor with a force of 50 N, and the box moves with a constant velocity. What can you conclude about the force of friction acting on the box?
a) The force of friction is greater than 50 N
b) The force of friction is less than 50 N
c) The force of friction is equal to 50 N
d) The force of friction is zero
Answer: c) The force of friction is equal to 50 N

25. An object with a mass of 6 kg is subjected to a net force of 12 N. What is its acceleration?
a) 0.5 m/s²
b) 2 m/s²
c) 6 m/s²
d) 18 m/s²
Answer: b) 2 m/s²

26. When you jump off a diving board, the diving board pushes you upward. What pushes the diving board downward?
a) Gravity
b) The water in the pool
c) The air
d) Your feet pushing off the board
Answer: d) Your feet pushing off the board

27. According to Newton’s Second Law, if the net force acting on an object increases, what happens to its acceleration?
a) Increases
b) Decreases
c) Remains constant
d) Becomes zero
Answer: a) Increases

28. When a pitcher throws a baseball, the action force is the throw exerted on the ball. What is the reaction force?
a) Gravity pulling the ball downward
b) The ball pushing back on the pitcher’s hand
c) The ball hitting the batter’s bat
d) The air resistance acting on the ball
Answer: b) The ball pushing back on the pitcher’s hand

29. A car traveling at a constant velocity around a circular track is an example of:
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) None of the above
Answer: a) Newton’s First Law

30. If you push an object with twice the force, how will its acceleration change?
a) It will double
b) It will halve
c) It will remain the same
d) It will quadruple
Answer: a) It will double

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