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SCIENCE forces and speed > forces and speed > Flashcards

forces and speed Flashcards

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1
Q

air resistance

A

the force on an object moving through the air that causes it to slow down (also known as drag)

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2
Q

balanced forces

A

forces acting on an object that are the same size but act in opposite directions. the object can be stationary or moving at a constant speed

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3
Q

compress

A

to squash into a smaller space

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4
Q

contact force

A

a force that acts when an object is in contact with a surface, air, or water

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5
Q

deform

A

to change shape

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6
Q

drag force

A

the force acting on an object moving through air or water that causes it to slow down

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7
Q

force

A

push, pull or twist

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8
Q

driving force

A

the force that is pushing or pulling something

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9
Q

calculate weight

A

mass times gravity

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10
Q

calculate mass

A

gravity divided by weight

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11
Q

calculate gravity

A

weight divided by mass

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12
Q

calculate density

A

mass divided by volume

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13
Q

the characteristics of a streamlined shape

A

rounded front, slowly tapering tail, smooth shape with no projections

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14
Q

newton meter

A

a piece of equipment that measures weight in

newtons

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15
Q

friction

A

the force that resists movement because of contact between surfaces.

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16
Q

what does kilograms measure

A

mass

17
Q

mass

A

the amount of matter something is made up of

18
Q

weight

A

the force of the earth on an object due to its mass

19
Q

density

A

how tightly packed the matter (stuff) is

20
Q

lubricant

A

something that reduces the amount of friction between two surfaces

21
Q

upthrust

A

a force pushing up on an object in water

22
Q

air resistance

A

friction between air and another material

23
Q

unbalanced forces

A

when the force one way is bigger than the other

24
Q

speed

A

how fast something is going

25
Q

calculate speed

A

distance divided by time

26
Q

thrust

A

a push caused by an engine

27
Q

lift

A

a force pushing up on an object flying in the air

28
Q

calculate time

A

distance divided by speed

29
Q

calculate distance

A

speed times time

30
Q

resistive forces

A

any forces that act to slowdown a moving object

SCIENCE forces and speed (1 decks)

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