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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?

Speed Signup and view all the answers

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

Drag force Signup and view all the answers

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

Reflection Signup and view all the answers

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

Its mass Signup and view all the answers

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

Velocity-time graph Signup and view all the answers

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

Momentum 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?

Buoyancy Signup and view all the answers

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

Pressure wave Signup and view all the answers

What is the SI unit of power?

Watt Signup and view all the answers