Physics: Motion, Force and Gravitation

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Questions and Answers

What is the force that attracts two objects with mass towards each other?

  • Nuclear force
  • Gravitational force (correct)
  • Electromagnetic force
  • Frictional force

What is the term for the force exerted by a fluid (liquid or gas) on an object partially or fully submerged in it?

  • Thrust
  • Buoyancy (correct)
  • Viscosity
  • Pressure

What is the term for the idea that the total energy of an isolated system remains constant over time?

  • Newton's first law
  • Conservation of energy (correct)
  • Law of inertia
  • Conservation of momentum

What is the term for the distance traveled by an object in a unit of time?

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

What is the term for the force that opposes the motion of an object through a fluid?

<p>Drag force (D)</p> Signup and view all the answers

What is the term for the process by which sound waves bounce back after hitting a surface?

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

What is the characteristic of an object that determines its resistance to changes in its motion?

<p>Its mass (D)</p> Signup and view all the answers

What is the graphical representation of an object's motion that shows its velocity and acceleration?

<p>Velocity-time graph (D)</p> Signup and view all the answers

What is the physical quantity that is the product of an object's mass and velocity?

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

What is the phenomenon in which the weight of an object appears to decrease when it is partially or fully submerged in a fluid?

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

What is the term for the repeating pattern of compressions and rarefactions in a medium?

<p>Pressure wave (D)</p> Signup and view all the answers

What is the SI unit of power?

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

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