Question

relative velocity question please help me

Answer 1

who comes up with these questions???? barely makes any sense.

Answer 2

:)

Answer 3

At any time t, the distance covered by A is ut and distance travelled by B is vt
using cosine rule, we have
\[ d^2= (ut)^2 + (vt)^2 - 2 utvt\cos \alpha \]