1

Question 1

volume

Answer 1

length x length x length

=m^3

Question 2

density

Answer 2

mass/volume

= kg/m^3 or kgm^-3

Question 3

velocity

Answer 3

displacement/time

= m/s or ms^-1

Question 4

acceleration

Answer 4

velocity/time

=m/s^2 or ms^-2

Question 5

force

Answer 5

mass x acceleration

=kgms^-2 or N

Question 6

displacement

Answer 6

velocity/time

=m

Question 7

moment

Answer 7

force x distance

Question 8

momentum

Answer 8

mass x velocity

=kgm/^s

Question 9

pressure

Answer 9

force/area

=Pa or N/m^2

Question 10

tera

Answer 10

10^12

Question 11

pico

Answer 11

10^-12

Question 12

mega

Answer 12

10^6

Question 13

giga

Answer 13

10^9

Question 14

kilo

Answer 14

10^3

Question 15

deci

Answer 15

10^-1

Question 16

centi

Answer 16

10^-2

Question 17

micro

Answer 17

10^-6

Question 18

nano

Answer 18

10^-9

Question 19

milli

Answer 19

10^-3

Question 20

What is a vernier caliper?

Answer 20

it consists of a main scale and a sliding vernier scale

Question 21

what is a micrometer screw gauge?

Answer 21

it is used to measure anything less than 1 cm and is too small for the vernier calipers to measure

Question 22

what is terminal velocity?

Answer 22

it is the greatest speed that a falling object can reach

Question 23

what are scalar quantities?

Answer 23

Quantities that are measured with numbers and units.e.g length,temp,time.

Question 24

what are vector quantities?

Answer 24

quantities that are measured with numbers and units but also have a specific direction.

Question 25

name 5 vector quantities?

Answer 25

displacement,velocity,acceleration,force,weight,friction,momentum,moment.

Question 26

name 5 scalar quantities?

Answer 26

mass,length,distance,speed,power,energy and work

Question 27

what does the area under a velocity time graph represent?

Answer 27

the distance covered

Question 28

what is mass?

Answer 28

Mass is the amount of matter that makes up an | object.

Question 29

how can the mass of an object change?

Answer 29

The mass of an object will not change unless we add | or subtract matter from it.

Question 30

what is used in measuring mass?

Answer 30

use a triple beam balance and a digital top-balance to measure mass.

Question 31

how do u calculate weight?

Answer 31

weight (N) = mass (kg) x gravitational field strength (N/kg)

Question 32

what are features of mass?

Answer 32

Always remains constant Does not depend on gravity Measured in Kg Measured with a Top-Balance

Question 33

what are features of weight?

Answer 33

Depends on gravity weight=mass x gravity weight of an object changes if the gravity changes Measured in N Measured with a spring balance

Question 34

what does inertia depend on?

Answer 34

depends on the mass of the body: The bigger the mass the more the Inertia The smaller the mass the less the inertia.

Question 35

what is inertia?

Answer 35

the natural tendency of an object to resist change in its state. or The inbuilt reluctance of a body to want to remain at rest or to continue in uniform motion is called the INERTIA.