Vectors - Subtraction

Description:

Concept in Subtraction of Vectors

• Let’s say vector b→ has to be subtracted froma→.

• The resultant vector, D→ = a→ - b→

• This should be interpreted as D→ = a→ + (−b→)

• Now, −b→ is simply b→ in reversed direction.

• So, D→ is simply the addition of a→ with the “reversed b→”.

Subtraction using Triangle Law

Consider vectors a→ and b→.

In order to subtract b→, it must be reversed.

Carry out the operation D→ = a→ + (−b→)

D→ here is the resultant of subtraction.

Subtraction using Parallelogram Law

Consider vectors a→ and b→

In order to subtract a→, it must be reversed.

Carry out the operation D→ = a→ + (−b→)

D→ here is the resultant of subtraction.