Physics Newton's Laws Flashcards

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Questions and Answers

What is inertia?

The tendency of all objects to resist any change in motion.

What is momentum?

A property of a moving object that depends on the object's mass and velocity.

What is Newton's First Law of Motion?

Law of Inertia.

What does the Law of Inertia state?

An object in motion will stay in motion at a constant speed and in the same direction unless acted on by an unbalanced force. Signup and view all the answers

Force is represented by the equation F = ______.

mass x acceleration. Signup and view all the answers

Acceleration depends only on the mass of the object.

False Signup and view all the answers

What is mass in relation to inertia?

A measure of inertia. Signup and view all the answers

What is Newton's Second Law of Motion?

Acceleration of an object depends on the mass of the object and the amount of force applied to it. Signup and view all the answers

What does Newton's Third Law of Motion state?

When one object exerts a force on a second object, the second object exerts a force that is equal in size and opposite in direction on the first. Signup and view all the answers

What are action-reaction force pairs?

All forces act in pairs. Signup and view all the answers

The more ______ an object has, the harder it is to stop the object or change its direction.

momentum. Signup and view all the answers

What does F = m x a represent?

Force equals mass times acceleration. Signup and view all the answers

Did Newton discover all 3 laws of motion?

False Signup and view all the answers

Which of Newton's laws states that an object at rest will remain at rest unless acted upon by an unbalanced force?

Newton's First Law of Motion. Signup and view all the answers

As mass increases, what happens to acceleration?

Acceleration decreases as mass increases because they are inversely proportional. Signup and view all the answers

What does mass measure?

It measures an object's inertia. Signup and view all the answers

What happens to acceleration as force increases?

Acceleration increases also because they are directly proportional. Signup and view all the answers

The larger the object, the more mass it has; the harder it is to ______.

accelerate. Signup and view all the answers

Study Notes

Newton's Laws of Motion

Inertia: Resistance of objects to change in motion.
Momentum: Product of an object's mass and velocity, indicating its motion's efficacy.
First Law of Motion (Law of Inertia): Objects in motion remain in motion at constant velocity; objects at rest remain at rest unless unbalanced forces act.
Force Equation: Force (F) is calculated as mass (m) multiplied by acceleration (a), represented as F = m × a.
Acceleration: Directly proportional to force and inversely proportional to mass; as force increases, acceleration increases; as mass increases, acceleration decreases.
Second Law of Motion: Acceleration of an object is influenced by the mass of the object and the applied force; expressed by the formula F = m × a.
Third Law of Motion: For every action, there is an equal and opposite reaction. Forces occur in pairs.
Action-Reaction Force Pairs: Every force exerted results in another force that is equal in size and opposite in direction to the initial force.
Measuring Inertia: Mass serves as a measurement of inertia; greater mass results in greater resistance to changes in motion.
Momentum's Implications: The more momentum an object possesses, the more difficult it is to change its state of motion.
Newton's Contributions: Newton did not discover the laws but articulated them clearly for better public understanding.
Real-World Applications:
- Examples like cars' automatic brake systems illustrate the First Law, demonstrating the principle of inertia.
- Comparing tractor trailers and motorcycles helps in understanding the First Law due to differences in mass and inertia.
Equations of Momentum: Momentum (p) is calculated as the product of mass (m) and velocity (v), represented as p = m × v.
Observing Forces and Motion:
- Any exertion of force will result in an equal but opposite reaction, showcasing the Third Law.
- An object in motion will maintain its trajectory unless impacted by an unbalanced force.
Proportional Relationships:
- Acceleration and force are directly proportional; increasing one leads to the increase of the other.
- Mass and acceleration exhibit an inverse relationship; increasing mass leads to reduced acceleration under constant force.

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Test your knowledge of Newton's Laws of Motion with these flashcards. Learn key terms such as inertia and momentum, along with the fundamental principles governing motion. Perfect for students studying physics concepts in depth.