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Physics > 9Ia – Forces and movement key words > Flashcards

9Ia – Forces and movement key words Flashcards

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1
Q

accelerate

A

To change velocity (speed or direction).

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2
Q

To change velocity (speed or direction).

A

accelerate

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3
Q

air resistance

A

A force that slows things down that are moving through air. It is caused by friction and by the object pushing the air out of the way.

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4
Q

A force that slows things down that are moving through air. It is caused by friction and by the object pushing the air out of the way.

A

air resistance

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5
Q

balanced forces

A

When two forces on an object are the same strength, but in opposite directions.

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6
Q

When two forces on an object are the same strength, but in opposite directions.

A

balanced forces

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7
Q

drag

A

Another name for air resistance or water resistance.

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8
Q

Another name for air resistance or water resistance.

A

drag

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9
Q

fluid

A

A gas or a liquid.

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10
Q

A gas or a liquid.

A

fluid

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11
Q

friction

A

A force between two objects that are touching. It usually acts to slow things down or prevent movement.

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12
Q

A force between two objects that are touching. It usually acts to slow things down or prevent movement.

A

friction

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13
Q

resultant force

A

The difference between forces in two opposite directions.

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14
Q

The difference between forces in two opposite directions.

A

resultant force

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15
Q

unbalanced forces

A

When two forces acting in opposite directions on an object are not the same strength. Unbalanced forces change the motion of objects.

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16
Q

When two forces acting in opposite directions on an object are not the same strength. Unbalanced forces change the motion of objects.

A

unbalanced forces

17
Q

upthrust

A

A force that pushes things up in liquids and gases.

18
Q

A force that pushes things up in liquids and gases.

A

upthrust

19
Q

water resistance

A

A force that slows things down that are moving through water. It is caused by friction and by the object pushing the water out of the way.

20
Q

A force that slows things down that are moving through water. It is caused by friction and by the object pushing the water out of the way.

A

water resistance

21
Q

weight

A

The amount of force with which gravity pulls something towards the Earth. It is measured in newtons (N).

22
Q

The amount of force with which gravity pulls something towards the Earth. It is measured in newtons (N).

A

weight

Physics (6 decks)

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