Hi all, I'm new to these boards. I have a basic conceptual knowledge of physics, but I was just watching some videos about special relativity and the following question struck me. I'm sure this is probably a pretty simple question but it's really been bothering me... I understand how "c" is constant and absolute and that it's improper to simply add velocities, but let's take the scenario where I'm on a spaceship traveling at the speed of light minus, say, 1 foot per second. I'm standing still (relative to the ship). I throw a baseball forward at 4 ft/s. Now to a stationary observer you can't add the velocities and say the ball is going faster than light. However in my own frame of reference, I'm at rest, so wouldn't I see the ball traveling away from me at 4 ft/s? How does one resolve this? I figure it has something to do with length contraction of the ball so it's not "really" going at 4 ft/s, but isn't the spaceship length contracted as well? Your thoughts? Thanks! Please feel free to be "mathy" in your response.