Newton’s Laws Practice Test Quiz

1. What does Newton’s first law of motion state?

• An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
• An object in motion tends to speed up indefinitely without any forces acting on it.
• An object at rest can only move if a force is applied continuously.
• An object will stop moving if no force is applied within a certain time frame.

2. According to Newton’s second law, how is acceleration determined by net force and mass?

• The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
• Acceleration is determined only by an object`s speed, not mass or force.
• An object`s acceleration is independent of both net force and mass.
• The acceleration of an object decreases as mass increases, regardless of net force.

3. Can you explain Newton’s third law of motion?

• For every action there is an equal and opposite reaction.
• The acceleration of an object increases as its mass decreases.
• The force of an object will always be greater than the force applied to it.
• An object at rest will remain at rest until a force acts on it.

4. What real-life example illustrates Newton’s third law when a climber pulls on a rope?

• The climber stays still while pulling the rope.
• The climber slides sideways while pulling the rope.
• The climber falls down as he pulls the rope up.
• The climber lifts upward as he pulls the rope down.

5. How would you express the relationship defined by Newton’s second law mathematically?

• ACCELERATION = FORCE / MASS
• FORCE = ACCELERATION / MASS
• FORCE = MASS times ACCELERATION
• FORCE + MASS = ACCELERATION

6. Describe an example that demonstrates Newton’s third law involving bumper cars.

• Bumper cars spin around without changing their position after a late hit.
• A bumper car accelerates forward without any interaction with others.
• Two bumper cars collide into each other, and each car jolts backwards.
• One bumper car crashes into a wall and doesn’t move back.

7. How does adding more weight affect the acceleration of a cyclist?

• The acceleration increases.
• The acceleration becomes negative.
• The acceleration decreases.
• The acceleration remains the same.

8. Give an example of Newton’s third law demonstrated by a simple action.

• A ball rolls down a hill due to gravity.
• A rocket expels gas to move in the opposite direction.
• A car accelerates when the driver steps on the gas.
• A swimmer pushes the water backward to propel herself forward.

9. What observation can be made when a smaller cannonball is fired compared to a larger one?

• The larger cannonball travels faster than the smaller one.
• The smaller cannonball does not leave the cannon.
• Both cannonballs travel at the same speed.
• The smaller cannonball travels faster than the larger one.

10. In what situation do you experience Newton’s first law while on a subway?

• When the subway train is moving smoothly and you feel nothing.
• When the subway train suddenly stops and your body continues to move forward.
• When the subway train speeds up and you feel a push backward.
• When the subway train makes a turn and you slide to the side.

11. How does the weight of your backpack relate to Newton’s first law?

• The weight of your backpack increases your speed when running.
• Heavier backpacks weigh down on the ground, not on your motion.
• The weight of your backpack has no impact on your ability to carry it.
• The weight of your backpack affects its inertia, making it harder to move or stop.

12. Explain how friction affects a boy sliding down a slide based on Newton’s first law.

• Friction causes the boy to accelerate faster down the slide.
• Friction keeps the boy in a state of uniform motion down the slide.
• Friction has no effect on the boy as he slides down the slide.
• Friction acts as an unbalanced force that slows down the boy as he slides down the slide.

13. What is the definition of inertia in the context of physics?

• The natural tendency of objects to resist changes in their state of motion.
• The speed at which an object moves in a straight line.
• The measure of how much matter is in an object.
• The force that an object exerts on another object during a collision.

14. How does the mass of an object influence its inertia?

• Heavier objects have less inertia than lighter ones.
• Mass has no effect on inertia.
• The more the mass, the more the inertia.
• Inertia increases only with speed, not mass.

15. What effect does mass have on the acceleration of an object?

• Mass does not affect acceleration at all.
• All objects accelerate equally regardless of mass.
• A smaller mass accelerates faster than a larger mass.
• A larger mass always moves faster than a smaller mass.

16. What unit is used to measure mass?

• Joule
• Meter
• Kilogram
• Newton

17. Which unit is designated for measuring force?

• Watt
• Joule
• Newton
• Pascal

18. What unit is used for measuring acceleration?

• J
• kg
• m/s²
• N

19. Can you relate Newton`s second law with the equation 1N = 1kg * m/S²?

• No
• Yes
• Maybe
• Uncertain

20. Is the commonly accepted acceleration due to gravity always 9.8 m/s²?

• 10 m/s²
• No
• 9.0 m/s²
• Yes

21. What equations describe the relationship between force, mass, and acceleration?

• F=ma²
• F=mxa
• a=F/m²
• m=F/a²

22. Calculate the acceleration of a block when a force of 52 N is applied to a 4 kg block.

• 8 m/S2
• 10 m/S2
• 15 m/S2
• 13 m/S2

23. What is the acceleration if a 5 kg block is pulled with a force of 61 N?

• 10.2 m/S2
• 12.2 m/S2
• 9.0 m/S2
• 15.0 m/S2

24. Determine the acceleration of a 25 kg person pushed upward with 300 N.

• 6 m/S2
• 10 m/S2
• 8 m/S2
• 12 m/S2

25. What force is needed to accelerate a 10 kg object upwards at 2 m/s²?

• 10 N
• 30 N
• 50 N
• 20 N

26. How do you find the mass of an object if a force of 17 N causes it to accelerate at 1.5 m/s²?

• 8.0 Kg
• 11.3 Kg
• 15.0 Kg
• 12.5 Kg

27. What is the acceleration of a 10 kg object acted upon by a 3 N force?

• 0.5 m/S2
• 0.3 m/S2
• 0.9 m/S2
• 1.0 m/S2

28. What mass is required for a force of 25 N to produce an acceleration of 5 m/s²?

• 5 Kg
• 15 Kg
• 2 Kg
• 10 Kg

29. Calculate the acceleration given a force of 5.20 N on a 1.05-kg object.

• 5.5 m/S2
• 1.25 m/S2
• 4.95 m/S2
• 3.33 m/S2

30. What is the acceleration of a 72 kg skydiver experiencing a 540 N air resistance?

• 0.5 m/S2
• 10 m/S2
• 6.0 m/S2
• 7.5 m/S2