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Chapter 12 > Friction > Flashcards

Friction Flashcards

0
Q

An astronaut in an orbiting spacecraft floats bc the spacecraft and the astronaut fall at the same rate

A

People in orbit

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1
Q

The pull of gravity based on the_____of two objects and the_____between them?

A

Mass and distance

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3
Q

The elliptical path one body such as the moon

A

Orbit

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4
Q

Two sources in contact

A

Friction

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5
Q

Substances that can flow easily

A

Fluid

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6
Q

The minimum speed to send an object into orbit is approximately 8000 meters per second

A

Space craft orbit

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7
Q

Examples of fluid

A

Liquid and gas

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8
Q

When an object pushes through a fluid, it pushes the molecules

A

Out of the way

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9
Q

Water pressure increased with great water depth?

A

Changing pressure in water

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11
Q

A force that is carried by air and moves the opposite direction

A

Air resistance

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12
Q

Ways to increase air resistance

A

Increasing speed and surface area

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13
Q

Ways to decrease air resistance

A

Decrease speed and surface area

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14
Q

Pressure in a fluid depends on?

A

Depth

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15
Q

Air pressure decreases at higher elevations bc there is less air above you

A

Changing pressure air

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16
Q

The upper force on objects in a fluid

A

Buoyancy force

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17
Q

Says that increased speed of the motion of a fluid decreases the pressure within the fluid and the faster a fluid moves the less pressure it exerts on surfaces or openings

Examples: prairie dog

A

Bernoulli’s Principle

18
Q

Says that when an outside pressure is applied at any point to a fluid in a container that presser is transmitted throughout the fluid with equal strength

Example: toothpaste

A

Pascal’s Principle

19
Q

Uses liquid to transmit or increase a force

A

Hydraulic Machines

20
Q

Resistance of a object to decrease to change a speed

A

Inertia

25
Q

The force that objects exert on each other?

A

Gravity

33
Q

Two objects with different______will have the same______acceleration in vacuum?

A

Masses

Chapter 12 (1 decks)

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