physics revision for prelims stuck on a mod 1 q 💀 (1 Viewer)

[Tryingtodowell]

For this one:

why is it A and not C Coz wouldnt it be Vxy= Vxg+ Vgy ->

Vxy = Vxg - Vyg (therefore the arrow would flip for Y)??

 

[Tryingtodowell]

bomp

 

[liamkk112]

View attachment 43846

For this one:

why is it A and not C Coz wouldnt it be Vxy= Vxg+ Vgy ->

Vxy = Vxg - Vyg (therefore the arrow would flip for Y)??

velocity of x relative to y = v_x - v_y so yeah i think you’re right
prob just wrong answer as is common in a lot of physics sample answers

 

[wizzkids]

You are correct, the answer is (C).
In all questions regarding relative velocities, if you are asked to find the velocity of A relative to a moving frame of reference B, rather that a stationary frame of reference, you must subtract the motion of the moving frame of reference.