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Quantities Flashcards

1
Q

what is the unit name of mass

A

kilograms

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2
Q

what is the abbreviation for kilograms

A

kg

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3
Q

what is kg measured by

A

scale

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4
Q

what is the unit name of length

A

metres

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5
Q

what is the abbreviation for length

A

m

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6
Q

what is m measured by

A

measuring tape

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7
Q

what is the unit name of time

A

seconds

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8
Q

what is the abbreviation of seconds

A

s

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9
Q

what can time be measured by

A

stopwatch

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10
Q

what is the unit name of area

A

metres squared

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11
Q

what is the abbreviation of metres squared

A

m^2

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12
Q

equation for area

A

w x l

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13
Q

what is the unit name of volume

A

metres cubed

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14
Q

what is the abbreviation of metres cubed

A

m^3

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15
Q

equation for volume

A

w x l x h

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16
Q

what is the unit name of speed

A

metres per second

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17
Q

what is the abbreviation of speed

A

ms^-1

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18
Q

equation for speed

A

d/t —> distance /time

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19
Q

what is the unit name of velocity

A

metres per second

20
Q

what is the abbreviation of velocity

A

ms^-1

21
Q

equation for velocity

A

s/t —> displacement/time

22
Q

what is the unit name of acceleration

A

metres per second

23
Q

what is the abbreviation of acceleration

A

ms^2

24
Q

equation for acceleration

A

v-u/t —-> final velocity - initial velocity / time

25
Q

what is the unit name of density

A

kilograms per metres cubed

26
Q

what is the unit name of force

A

newtons or kilogramsmetres per second

27
Q

what is the unit name of energy

A

joules

28
Q

what is the unit name of work

A

kilograms metres squared

29
Q

what is the unit name of power

A

watts or joules per second or kilograms per second

30
Q

what is the abbreviation of density

A

kg/m^3

31
Q

what is the abbreviation of force

A

N or kgms^2

32
Q

what is the abbreviation of energy

A

J

33
Q

what is the abbreviation of work

A

kgm^2s^-2

34
Q

what is the abbreviation of power

A

W or J/s or kgm^2s^-3

35
Q

equation for density

A

p= m/v —> density= mass/volume

36
Q

equation for force

A

F=ma —> mass x acceleration or F = chane in mass x velocity / change in time

37
Q

equation for energy

A

W = F x d —> force x distance

38
Q

equation for work

A

Ek = 1/2 x m x v^2 —> 0.5 x mass x velocity^2

39
Q

equation for power

A

P= E/t —> energy / time

40
Q

define scalar

A

Has no direction only magnitude, size but no direction

41
Q

define vector

A

Has direction and magnitude, rate or change with a direction

42
Q

define magnitude

A

amount of a quantity

43
Q

3 examples of a vector

A

Velocity, Acceleration, Weight

44
Q

5 examoles of a scalar

A

Temp, speed, mass, distance, time

45
Q

define dispacement

A

directly from start to finish but direction can always go off course at a longer route

46
Q

define instantaneous speed

A

speed of (eg. car) over short period of time

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