Module 1: Units

Question 1

What is the standard unit and symbol for **Force **

Answer 1

Newton (N)

Question 2

What is the standard unit and symbol for mass

Answer 2

Symbol (m)
Standard unit (kg)

Question 3

Standard unit and symbol for time

Answer 3

(t)
seconds (s)

Question 4

Standard unit and symbol for
current

Answer 4

(I)
amps (A)

Question 5

Standard unit and symbol for acceleration

Answer 5

(a)
m/s/s

Question 6

Standard unit and symbol for velocity

Answer 6

(v)
m/s

Question 7

Standard unit and symbol for Energy

Answer 7

(j)
Joule

Question 8

Standard unit and symbol for power

Answer 8

(w)
watt

Question 9

When the prefix (k) is used it means

how many metres in 15 km ?

Answer 9

kilo
x 10^3

15 km has 15 x 10^3 metres

Question 10

When the prefix (M) is used it means

How many watts in a 5 Mw

Answer 10

Mega
x 10^6

in 5 Mw there is 5 x 10^6 watts

Question 11

When the prefix (G) is used it means

How many joules are there in 15Gj ?

Answer 11

Giga

x10^9

In 15 Gj there re 25 x 10^9 j

Question 12

When the prefix (m) is used it means

how many metres are there in 20mm?

Answer 12

milli

x10^-3

There are 20 x 10^3 metres in 20 mm

Question 13

When the prefix (µ ) is used it means

how many metres in 30 µm?

Answer 13

micro

x 10 ^-6

there are 30 x 10^-6 metres in 30µm

Question 14

When the prefix (n ) is used it means

how many metres in 200nm?

Answer 14

nano
x 10 ^-9

there are 200 x 10^-9 metres in 200nm