1. The problem statement, all variables and given/known data An astronaut is on a space walk when his tether breaks. He has no rocket pack, only a big wrench. How does he get back to the ship? 2. Relevant equations p=mv 3. The attempt at a solution I have no idea. I imagined him using the wrench as some sort of "paddle" as he space-canoed his way back to the ship. Any more realistic ideas?