Quantities

Question 1

what is the unit name of mass

Answer 1

kilograms

Question 2

what is the abbreviation for kilograms

Answer 2

kg

Question 3

what is kg measured by

Answer 3

scale

Question 4

what is the unit name of length

Answer 4

metres

Question 5

what is the abbreviation for length

Answer 5

m

Question 6

what is m measured by

Answer 6

measuring tape

Question 7

what is the unit name of time

Answer 7

seconds

Question 8

what is the abbreviation of seconds

Answer 8

s

Question 9

what can time be measured by

Answer 9

stopwatch

Question 10

what is the unit name of area

Answer 10

metres squared

Question 11

what is the abbreviation of metres squared

Answer 11

m^2

Question 12

equation for area

Answer 12

w x l

Question 13

what is the unit name of volume

Answer 13

metres cubed

Question 14

what is the abbreviation of metres cubed

Answer 14

m^3

Question 15

equation for volume

Answer 15

w x l x h

Question 16

what is the unit name of speed

Answer 16

metres per second

Question 17

what is the abbreviation of speed

Answer 17

ms^-1

Question 18

equation for speed

Answer 18

d/t —> distance /time

Question 19

what is the unit name of velocity

Answer 19

metres per second

Question 20

what is the abbreviation of velocity

Answer 20

ms^-1

Question 21

equation for velocity

Answer 21

s/t —> displacement/time

Question 22

what is the unit name of acceleration

Answer 22

metres per second

Question 23

what is the abbreviation of acceleration

Answer 23

ms^2

Question 24

equation for acceleration

Answer 24

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

Question 25

what is the unit name of density

Answer 25

kilograms per metres cubed

Question 26

what is the unit name of force

Answer 26

newtons or kilogramsmetres per second

Question 27

what is the unit name of energy

Answer 27

joules

Question 28

what is the unit name of work

Answer 28

kilograms metres squared

Question 29

what is the unit name of power

Answer 29

watts or joules per second or kilograms per second

Question 30

what is the abbreviation of density

Answer 30

kg/m^3

Question 31

what is the abbreviation of force

Answer 31

N or kgms^2

Question 32

what is the abbreviation of energy

Answer 32

J

Question 33

what is the abbreviation of work

Answer 33

kgm^2s^-2

Question 34

what is the abbreviation of power

Answer 34

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

Question 35

equation for density

Answer 35

p= m/v ---> density= mass/volume

Question 36

equation for force

Answer 36

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

Question 37

equation for energy

Answer 37

W = F x d ---> force x distance

Question 38

equation for work

Answer 38

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

Question 39

equation for power

Answer 39

P= E/t ---> energy / time

Question 40

define scalar

Answer 40

Has no direction only magnitude, size but no direction

Question 41

define vector

Answer 41

Has direction and magnitude, rate or change with a direction

Question 42

define magnitude

Answer 42

amount of a quantity

Question 43

3 examples of a vector

Answer 43

Velocity, Acceleration, Weight

Question 44

5 examoles of a scalar

Answer 44

Temp, speed, mass, distance, time

Question 45

define dispacement

Answer 45

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

Question 46

define instantaneous speed

Answer 46

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