Two astronauts are at rest in outer space, one 12.1 m from the Space Shuttle and the other 24.2 m from the Shuttle. Using a 151.0-W laser, the astronaut located 24.2 m away from the Shuttle decides to propel the other astronaut toward the Space Shuttle. He focuses the laser on a piece of totally reflecting fabric on her space suit. If her total mass with equipment is 151.0 kg, how long will it take her to reach the Space Shuttle?