Newton's Laws of Motion

A rocket launching is an example of which of Newton's Laws?

• grams

• An object at rest stays at rest unless an unbalanced force acts upon it

• For every action there is an equal and opposite reactionOption 1

• 3rd law

Answer explanation

A rocket launching demonstrates Newton's 3rd Law: for every action, there is an equal and opposite reaction. The rocket's engines push down on the ground, and in response, the rocket is propelled upward.

Tags

NGSS.MS-PS2-1

What unit is used to measure Mass?

• grams

• For every action there is an equal and opposite reaction

• The natural resistance of an object

• 3rd law

Answer explanation

Mass is commonly measured in grams, which is a standard unit in the metric system. Other units like kilograms or pounds are also used, but grams is the correct answer for this question.

What is Newton's second law?

• The natural resistance of an object

• Force = mass x acceleration

• An object at rest stays at rest unless an unbalanced force acts upon it

• Newtons

Answer explanation

Newton's second law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (Force = mass x acceleration). This is the correct definition of the law.

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NGSS.MS-PS2-2

What is Newton's first law state?

• Newtons

• An object at rest stays at rest unless an unbalanced force acts upon it

• Friction

• Force = mass x acceleration

Answer explanation

Newton's first law states that an object at rest stays at rest unless an unbalanced force acts upon it. This means that without external forces, an object's state of motion will not change.

How many laws of motion are there?

• 1

• 2

• 3

• 4

Answer explanation

There are 3 laws of motion formulated by Sir Isaac Newton. These laws describe the relationship between the motion of an object and the forces acting on it, making the correct answer 3.

A push or pull

• grams

• Weight

• force

• Newton

Answer explanation

A push or pull is defined as a force. While weight is a measure of the force of gravity on an object, the term 'force' directly describes the action of pushing or pulling, making it the correct answer.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is inertia?

• The natural resistance of an object to change its state of motion

• grams

• Friction

• Newtons

Answer explanation

Inertia is defined as the natural resistance of an object to change its state of motion. This means that an object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is Newton's third law?

• Force = mass x acceleration

• Weight

• For every action there is an equal and opposite reaction

• grams

Answer explanation

Newton's third law states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs; when one object exerts a force on another, the second object exerts a force of equal magnitude in the opposite direction.

Tags

NGSS.MS-PS2-1

Tim & Moby are able to sled down a hill because gravity causes them to accelerate. Which law is this?

• The First Law

• The Second Law

• The Third Law

• All 3

Answer explanation

The Second Law states that force equals mass times acceleration (F=ma). Gravity provides the force that causes Tim & Moby to accelerate down the hill, making this law applicable to their sledding.

Tags

NGSS.MS-PS2-4

Your cup of chocolate milk doesn't move until your pet unicorn finds it! Which of Newton's laws is this?

• The First Law

• The Second Law

• The Third Law

• All 3

Answer explanation

This scenario illustrates Newton's First Law, which states that an object at rest stays at rest unless acted upon by an external force. The cup of chocolate milk remains still until your pet unicorn finds it.