Motion, Forces, and Energy

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Questions and Answers

Which branch of physics deals with the motion of bodies under the action of forces?

  • Mechanics (correct)
  • Thermodynamics
  • Electromagnetism
  • Optics

What does kinematics describe?

  • Electromagnetic waves
  • Forces causing motion
  • Energy transfer
  • Motion without considering forces (correct)

What is the definition of velocity?

  • The rate of change of displacement with respect to time. (correct)
  • The total distance traveled by an object.
  • The force acting on an object.
  • The rate of change of acceleration with respect to time.

What does Newton's First Law of Motion describe?

<p>The tendency of an object to resist changes in its state of motion (B)</p> Signup and view all the answers

What is the formula for kinetic energy?

<p>$KE = \frac{1}{2}mv^2$ (A)</p> Signup and view all the answers

What is momentum a product of?

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

What is angular velocity?

<p>The rate of change of angular displacement. (B)</p> Signup and view all the answers

Which law describes the gravitational force between two masses?

<p>Newton's Law of Universal Gravitation (D)</p> Signup and view all the answers

What is the relationship between frequency and period?

<p>They are inversely proportional (C)</p> Signup and view all the answers

What is heat?

<p>The transfer of energy due to a temperature difference (C)</p> Signup and view all the answers

Flashcards

Mechanics

Study of motion of bodies under forces, including when bodies are at rest.

Kinematics

Describes motion (points, bodies, systems) without considering the forces causing the movement.

Dynamics

Study of forces and their effect on motion.

Newton's First Law

Object at rest stays at rest, object in motion stays in motion unless acted upon by force.

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Work (Physics)

The energy transferred to or from an object by a force.

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Kinetic Energy

The energy possessed by an object due to its motion.

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Momentum

Product of mass and velocity (p = mv).

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Wave Interference

Phenomenon when two or more waves combine resulting in wave with different amplitude.

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Thermodynamics

Branch of physics dealing with heat, temperature, and their relation to energy and work.

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Refraction

The bending of light as it passes from one medium to another.

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Study Notes

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