Scalars and Vectors

Question 1

Leng Symbol, SI unit and the units symbol

Answer 1

Symbol: l,x,y,r or D
Unit: metre
Symbol for unit: m

Question 2

Time

Answer 2

t
second
s

Question 3

Mass

Answer 3

m
kilogram
kg

Question 4

Electrical current

Answer 4

I
ampere
A

Question 5

Temperature

Answer 5

T
kelvin
K

Question 6

Quantity of matter

Answer 6

n
mole
mol

Question 7

Information on scalar

Answer 7

Mass: 6kg
Time: 5s
Distance: 2m
Speed: 60m.s-1
Volume: 20m^3
Energy: 200J
Power: 1200 W

Question 8

Information on Vector

Answer 8

Force: 6 N
Weight 340 N
Displacement (40 m west
Velocity 5m.s^-1 east

Question 9

Differentiate between vector and scalar quantities

Answer 9

• Direction: Vectors have direction, while scalars do not.
• Representation: Vectors are represented by arrows or components, while scalars are represented by single numbers.
• Operations: Vectors require special rules for addition and subtraction, while scalars follow regular arithmetic rules.

Question 10

Define resultant vector

Answer 10

Single vector that has the same effect as a combination of vectors.