Compound Measures

Question 1

What is the equation off speed?

Answer 1

Speed - distance / time

Question 2

What is the equation for distance?

Answer 2

Distance = speed x time

Question 3

What is the equation for time?

Answer 3

Time = distance / speed

Question 4

Paul travels at 4m/s for 15 seconds. How far does he travel

Answer 4

D = s x t
D = 4 x 15
D = 60meters

Question 5

Mary travels 2.6km when traveling at 10m/s. How long does it take? (In hours

Answer 5

1000 meters = 1 km
2.6km=2600meters
Time=distance/speed
T=2600meters/10m/s
T=260seconds
=4mins 20 seconds
=0.7(2recurring) hours

Question 6

Glasgow to Liverpool is 548km. Susan drove from Glasgow to Liverpool at na average speed of 40km/hour. Work out the time in hours and minutes that the journey took.

Answer 6

T = d/s

348/40=8.7hours=8hours42minutes

Question 7

What is the equation for density?

Answer 7

Density =mass /volume

Question 8

What is the equation for mass?

Answer 8

Mass = density x volume

Question 9

What is the equation for volume?

Answer 9

Volume = mass / density

Question 10

What is an example of the units for density?

Answer 10

G/cm^3

Question 11

What is an example of the units for mass?

Answer 11

Kg

Question 12

What is an example of the units for volume?

Answer 12

Cm^3

Question 13

The density of steel is 7700kg/m^3. A steel bar had a volume of 2.5m^3. Work out the mass of this bar.

Answer 13

M = d x v
=7700 x 2.5
=19250kg

Question 14

The density of steel is 7700kg/m^3. A block of steel has a mass of 1540kg. Work out the volume of the block

Answer 14

V = m / d
=1540/7700
=0.2m^3

Question 15

What is pressure?

Answer 15

The force of newtons applied over an area

Question 16

What are the two units for pressure?

Answer 16

N/m^2 or N/cm^2

Question 17

What is the equation for pressure?

Answer 17

Pressure = force / area

Question 18

What is the equation for force?

Answer 18

Force = pressure x area

Question 19

What is the equation for area?

Answer 19

Area = force / pressure

Question 20

A force of 85 Newtons is applied to an area of 1.5m^2. Work out the pressure in N/m^2

Answer 20

P = f/a
P = 35/1.5
=23.(3recurring) n/m^2

Question 21

A free is applied to an area of 4.5m^2. It produces pressure of 12N/m^2. Work out the force in Newtons

Answer 21

F = p x a
=12 x 4.5
=54N

Question 22

A box exerts a force of 120N onto a table. The pressure on the table is 50N/m^2. Calculate the area of the box in contact with the table

Answer 22

A = f/p
A=120/50
=2.4n/m^2

Question 23

1 meter = ? Cm

Answer 23

100cm

Question 24

1m^2 =? Cm^2

Answer 24

100^2cm^2

=10000cm^2

Question 25

1m^3 =? cm^3

Answer 25

100^3cm^3

= 1000000cm^3

Question 26

Convert 4m^2 into cm^2

Answer 26

4 x 100^2
=4x10000
=40000cm^2

Question 27

700000cm^3 into m^3

Answer 27

700000 / 100^3
=700000 / 1000000
=0.7m^3

Question 28

A force of 35Newtons is applied to an area of 1.5m^2. Work out the pressure in N/cm^2

Answer 28

1.5m
=1.5x100^2
=15000cm^2

P = f/a
P= 35/15000
=0.0023n/cm^2

Question 29

A force is applied to an area of 3.5m^2. It produces pressure of 15n/cm^2. Work out the force in Newtons

Answer 29

3.5m^2=35000cm^3

F=P x a
=15 x 35000
=525000N

Question 30

Meters^2 –> cm^2 = ? = ?

Answer 30

= x100^2 = 10000

Question 31

Cm^2 –> meters^2 = ? = ?

Answer 31

= divided by 100^2 = 10000