Newton’s Law Of Motion Quiz. Newton’s laws of motion explain how objects move and how forces affect their movement. These laws help students to understand motion in everyday life, such as walking, running, riding bicycles, driving cars, and the movement of machines. The three laws were developed by Sir Isaac Newton and are very important in physics and engineering.
NEWTON’S FIRST LAW OF MOTION – OBJECTIVE QUESTIONS
1. Newton’s first law is also known as the law of
A. Acceleration
B. Inertia
C. Momentum
D. Energy
2. Inertia is the ability of a body to
A. Change direction easily
B. Resist change in motion
C. Move faster
D. Produce energy
3. A body at rest will remain at rest unless
A. It is heated
B. It is pushed
C. An external force acts on it
D. Gravity stops it
4. A moving object will continue moving unless
A. It loses energy
B. It is stopped by force
C. It becomes hot
D. It slows naturally
5. Which of the following shows inertia?
A. A rolling ball stopping
B. A stone falling
C. A passenger falling forward when a bus stops suddenly
D. A fan producing air
Newton’s Law Of Motion Quiz
6. When a vehicle starts suddenly, passengers tend to move backward because of
A. Gravity
B. Friction
C. Inertia
D. Pressure
7. Which type of inertia resists change from rest to motion?
A. Inertia of rest
B. Inertia of motion
C. Inertia of direction
D. Inertia of speed
8. Which type of inertia resists change in direction?
A. Inertia of rest
B. Inertia of motion
C. Inertia of direction
D. Inertia of mass
9. A book lying on a table remains at rest because
A. It is heavy
B. No external force acts on it
C. It has no energy
D. Air supports it
10. When a car moves suddenly, loose objects fall backward due to
A. Pressure
B. Friction
C. Inertia
D. Heat
Newton’s Law Of Motion Quiz – Second Law
11. Newton’s second law relates force with
A. Speed and distance
B. Mass and acceleration
C. Time and energy
D. Power and work
12. The formula for Newton’s second law is
A. F = mv
B. F = ma
C. F = m/a
D. F = a/m
13. Acceleration of a body is directly proportional to
A. Mass
B. Force
C. Distance
D. Time
14. Acceleration is inversely proportional to
A. Force
B. Speed
C. Mass
D. Energy
15. If force increases and mass remains constant, acceleration will
A. Decrease
B. Remain the same
C. Increase
D. Become zero
16. If mass increases and force remains constant, acceleration will
A. Increase
B. Decrease
C. Remain constant
D. Disappear
17. The SI unit of force is
A. Joule
B. Newton
C. Watt
D. Pascal
18. Which of the following will require more force to move?
A. Empty box
B. Loaded truck
C. Paper
D. Balloon
19. A football moves faster when kicked harder because
A. More energy is lost
B. More force produces more acceleration
C. Air pushes it
D. Gravity increases
20. Which law explains why heavy objects are harder to push?
A. First law
B. Second law
C. Third law
D. Law of energy
Newton’s Law Of Motion Quiz: Third Law
21. Newton’s third law states that to every action there is
A. Equal force
B. Greater reaction
C. Equal and opposite reaction
D. Smaller reaction
22. Action and reaction forces act on
A. The same body
B. Different bodies
C. Only heavy bodies
D. Only light bodies
23. When you push a wall, the wall
A. Moves away
B. Breaks
C. Pushes back on you
D. Absorbs force
24. Walking is possible because of
A. Gravity
B. Friction
C. Action and reaction
D. Pressure
25. A swimmer moves forward because
A. Water pulls him
B. He pushes water backward
C. Wind pushes him
D. Gravity helps
26. Recoil of a gun is due to
A. Heat
B. Friction
C. Action and reaction
D. Pressure
27. When a bird flies, it pushes air
A. Forward
B. Backward
C. Upward
D. Sideways
28. Rocket movement is based on
A. Friction
B. Air pressure
C. Action and reaction
D. Gravity
29. Which of the following is an example of Newton’s third law?
A. Falling stone
B. Jumping off a boat
C. Parked car
D. Standing man
30. When you jump from a canoe, the canoe moves backward because of
A. Inertia
B. Friction
C. Reaction force
D. Weight
Newton’s Law Of Motion Quiz ANSWERS AND EXPLANATIONS
1. Answer: B
The first law is called the law of inertia because it explains the resistance of objects to change their state of rest or motion.
2. Answer: B
Inertia is the tendency of a body to resist any change in its state of motion or rest.
3. Answer: C
A body will remain at rest unless an external force acts on it.
4. Answer: B
A moving object continues moving until a force stops or changes its motion.
5. Answer: C
Passengers move forward when a bus stops due to inertia of motion.
6. Answer: C
Passengers move backward when a vehicle starts suddenly because their bodies resist change in rest.
7. Answer: A
Inertia of rest resists movement from rest.
8. Answer: C
Inertia of direction resists change in direction.
9. Answer: B
Without external force, the book remains at rest.
10. Answer: C
Loose objects fall backward due to inertia when motion begins suddenly.
11. Answer: B
The second law connects force with mass and acceleration.
12. Answer: B
Force equals mass multiplied by acceleration.
13. Answer: B
More force produces more acceleration.
14. Answer: C
Heavier objects accelerate less for the same force.
15. Answer: C
More force leads to greater acceleration.
16. Answer: B
Greater mass reduces acceleration.
17. Answer: B
Force is measured in newtons.
18. Answer: B
A loaded truck has more mass and needs more force.
19. Answer: B
Greater force gives greater acceleration.
20. Answer: B
The second law explains this effect.
21. Answer: C
Every action has an equal and opposite reaction.
22. Answer: B
Action and reaction act on different bodies.
23. Answer: C
The wall pushes back with equal force.
24. Answer: C
Walking depends on action and reaction between feet and ground.
25. Answer: B
The swimmer pushes water backward to move forward.
26. Answer: C
Recoil follows action and reaction.
27. Answer: C
Birds push air downward to rise.
28. Answer: C
Rockets move due to reaction from expelled gases.
29. Answer: B
Jumping off a boat causes backward movement.
30. Answer: C
The canoe moves backward due to reaction force.
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