英语翻译
A 60.0 kg astronaut is on a space walk when the tether line to the shuttle breaks.The astronaut is able to throw a 11.0 kg oxygen tank in a direction away from the shuttle with a speed of 10.6 m/s,propelling the astronaut back to the shuttle.Assuming that the astronaut starts from rest,find the final speed of the astronaut after throwing the tank.Answer in units of m/s