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Forces revision > Forces > Flashcards

Forces Flashcards

1
Q

What is a force?

A

A push, pull or twist

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2
Q

how do you find mass?

A

Density x volume

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3
Q

how do you find volume?

A

mass / density

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4
Q

how do you find density?

A

mass / volume

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5
Q

how do you find speed?

A

distance / time

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6
Q

how do you find distance?

A

speed x time

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7
Q

how do you find time?

A

distance / speed

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8
Q

speed

A

mph, m/s, cm/day, cm/s, km/h

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9
Q

distance

A

miles, km, m, cm

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10
Q

time

A

hours, day, seconds

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11
Q

what is friction?

A

the force between two surfaces sliding over one another, that causes them to heat up and wear

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12
Q

what is weight?

A

the force that pulls objects towards the centre of the Earth

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13
Q

What is air resistance/ drag?

A

a force acting against any object that is moving through the Earth’s atmosphere

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14
Q

What is lift?

A

a force pushing upwards on an object flying in the air

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15
Q

What is upthrust?

A

a force pushing upwards on an object in a liquid

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16
Q

never say 1

A

fair test

17
Q

never say 2

A

valid experiment

18
Q

what is thrust?

A

a push caused by an engine

19
Q

what is push/pull?

A

a force exerted to move an object away or towards another object

20
Q

what does compress mean?

A

to squash into a smaller space

21
Q

what is gravity?

A

a non-contact force that acts between two masses

22
Q

what is mass?

A

the amount of matter (stuff) a thing is made up of

23
Q

what is a newton?

A

the unit of force, symbol N

24
Q

what does balanced mean?

A

forces acting on an object that are the same size but act in opposite directions

25
Q

what is a newton meter?

A

a piece of equipment, used to measure weight in newtons

26
Q

what is a reaction?

A

the support force provided by a solid surface like a floor

27
Q

what does streamlined mean?

A

shaped to reduce resistance to motion from air or water

28
Q

what does tension mean?

A

a stretching force

29
Q

what does unbalanced mean?

A

opposing forces on an object that are unequal

30
Q

what does deform mean?

A

to change shape

Forces revision (1 decks)

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