Plz 30 points answer only if you know
the correct formula for finding the relative velocity of an object is:
v a/c = v a/b - v b/c
v a/c = v a/b + v b/c
v a/b = v a/b + v b/c
v b/c = v a/b + v b/c

v a/c = v a/b + v b/c

Explanation:

Assuming you are saying Velocity of A relative to C as v a/c (I'm sorry I have not seen this format in over local texts )

Using the triangle of velocity you can arrive at this equation,

Velocity of A relative to C = Velocity of A relative to B + Velocity of B relative to C.

Consider a car travelling on Earth with a passenger while you walk on the road. So your velocity as seen by passenger is,

Velocity of you relative to passenger = Velocity of you relative to Earth + Velocity of Earth relative to passenger.

unbalanced force

explanation: