I have a question about Earth's rotation around its own axis. Earth rotates at around 1000 miles per hour. However, if I stand in an open field and let a balloon float beside me in mid-air, I wouldn't expect the balloon to fall away (or appear to fly away) at that speed when I let go of it. I understand that if I jump up or throw something vertically, I give myself or the object it an initial velocity with a vector that is in the same direction as the rotation of the Earth. But what happens in the case of the balloon, an object which appears stationary in my frame of reference. Looking forward to hearing your clarifications.