Dynamics and Newton's Laws of Motion

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Questions and Answers

Which of the following best describes dynamics?

  • The study of forces only
  • The study of the cause of motion (correct)
  • The study of motion only
  • The study of energy

Which factor does NOT directly affect an object's motion?

  • Applied force
  • Color of the object (correct)
  • Frictional forces
  • Mass of the object

What is the definition of force?

  • The agent that changes the state of rest or motion of a body (correct)
  • The speed of an object
  • The mass of an object
  • The energy of an object

What can force do to a body?

<p>Accelerate it (D)</p> Signup and view all the answers

Which of the following describes momentum?

<p>The quantity of motion contained in a body (D)</p> Signup and view all the answers

Momentum is the product of which two quantities?

<p>Mass and velocity (A)</p> Signup and view all the answers

What do objects resist according to Newton's first law of motion?

<p>Changes in their state of rest or motion (C)</p> Signup and view all the answers

What is another name for Newton's first law of motion?

<p>Law of inertia (D)</p> Signup and view all the answers

What property of an object is inertia related to?

<p>Mass (C)</p> Signup and view all the answers

What does Newton's second law of motion relate?

<p>Force, mass, and acceleration (C)</p> Signup and view all the answers

Flashcards

What is Dynamics?

The study of the causes of motion, including force, mass, and friction's effects.

What is Force?

An agent that can change an object's state of rest or motion; it can cause acceleration.

What is Momentum?

A measure of how much motion is 'contained' in a body; product of mass and velocity.

Newton's First Law

Objects resist changes to their state of rest or motion; known as Law of Inertia.

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What is Inertia?

Innate property of an object that resists changes in its state of motion.

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Newton's Second Law

A net force produces acceleration in the direction of the force. (F=ma)

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Study Notes

  • Dynamics is a study of the cause of motion.
  • Common forces, mass, and frictional forces influence an object's motion.
  • Force is what changes an object's state of rest or motion, causing acceleration.
  • Momentum is the quantity of motion within a body.
  • Momentum is the product of the mass and velocity of a moving object.
  • Newton's first law states objects resist changes to their state of rest or motion.
  • Newton's first law of motion is also called the law of Inertia.
  • Inertia is a property of an object that allows it to maintain its state of rest or motion.
  • Newton's second law of motion states that a net force causes acceleration in the direction of the force and is given by F=ma.

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