maths/ physics

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An aircraft P flying at a constant height has a velocity of (300+j400)km/h. Another aircraft Q at the same height has a velocity of (200+j500) km/h.
Determine a)the velocity of P in relation to Q.
b) the velocity of Q in relation to P

• maths/ physics -

Ok, you need to learn to do these. We will be happy to critique your reasoning or work.

Velocityrelativez + VelocityZrelativeground= velocityrelativetoground

so memorize that. In this case it says

velocityPrelA+VelocityQrelground=VelocityPrelativeGround

or
VelociytPrelQ+(200+j500)=300+j400

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