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Two astronauts are at rest in outer space, one 19.7 m from the Space Shuttle and the other 39.4 m from the Shuttle. Using a 129.0-W laser, the astronaut located 39.4 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 105.0 kg, how long will it take her to reach the Space Shuttle?

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