Miguel is trapped in space. He was working on the engine of his spacemobile when a meteor sideswiped him. His jetpack stopped him, but he is now 280.0 m away from his ship, and his jetpack is out of fuel. He has a mass of 65.3 kg and the pack's mass is 15.8 kg. If he throws the pack away from his ship at 9.74 m/s, how long will it take him to reach his spacemobile?