I appreciate that, but is there more to it.
I don't perfer the answer, but can you guide me through it.
What does it mean u subscript r and u sunbscript theta?
Find the acceleration vector in terms of u subscript r and u subscript \theta
r = a(4-cos\theta) and d\theta/dt = 6
Im pretty sure to take the derivative:
r' = a(4+sin\theta)
r" = a(4+cos\theta)
what should i do next?