Exploring Newton's Laws of Motion

What is Newton's Third Law of Motion?

• An object at rest stays at rest unless acted upon by an external force.

• For every action, there is an equal and opposite reaction.

• The acceleration of an object depends on the mass of the object and the amount of force applied.

• The force of gravity acts between all objects in the universe.

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Michael is observing different forces at play in his surroundings. Which of the following is an example of a non-contact force?

• Friction

• Tension

• Gravity

• Normal force

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Sophia is driving her car at a constant speed on a highway. What can be said about the forces acting on it?

• The forces are unbalanced.

• The net force is zero.

• The car is accelerating.

• The car is decelerating.

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What happens when two cars driven by Avery and Arjun collide according to Newton's Third Law?

• They exert equal and opposite forces on each other.

• They stop moving.

• They merge into one object.

• They exert forces only in one direction.

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Which of the following best describes a magnetic field?

• A region where a magnetic force can be detected.

• A region where gravity is strongest.

• A region where sound waves are amplified.

• A region where light is refracted.

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Mia is pushing a shopping cart with a force of 10 N. If the shopping cart has a mass of 2 kg, what is the acceleration of the cart?

• 2 m/s²

• 5 m/s²

• 10 m/s²

• 20 m/s²

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Elijah is playing with a magnet near a pile of iron filings. What will happen to the iron filings?

• They will be repelled by the magnet.

• They will be attracted to the magnet.

• They will remain unaffected.

• They will change color.

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Mason throws a ball upwards during a game. What forces are acting on it while it is in the air?

• Only gravity

• Gravity and air resistance

• Only air resistance

• No forces

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Priya and Kai are ice skating at the rink. They push off from each other. What will happen according to Newton's Third Law?

• They will both move in the same direction.

• They will move in opposite directions.

• One will move, and the other will remain stationary.

• They will both remain stationary.

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Nora is pushing a shopping cart with a constant force. What happens to the acceleration of the cart if she adds more groceries, increasing its mass?

• The acceleration increases.

• The acceleration decreases.

• The acceleration remains the same.

• The cart stops moving.

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