Question

A particle A moves with a velocity 4 i and another particle B moves with a velocity - 3. Find VAB, VBA
and their magnitude.​

Answer 1

Answer:

VAB is equal to 7i And

VBA=-7i

Answer 2

Answer:

$V_{AB}$ = -7i

$V_{BA}$  = 7i

Magnitude of both is same = 7    

Explanation:

In the given question,

Velocity of the particle A = 4i

Velocity of the particle B = -3i

Now,

We have to find the value of $V_{AB}$ which is define as,

$V_{AB}=V_{B}-V_{A}$

$V_{AB} \ = \ -3i \ - \ 4i$

∴ $V_{AB}$ = -7i

Also magnitude = 7

As we know that $V_{AB}$ is oppposite of $V_{BA}$,that is,

$V_{AB}$ = - $V_{BA}$

∴ $V_{BA}$ = - (- 7i) = 7i

Also magnitude = 7