A possible spacecraft design uses a solar sail made of aluminized plastic. As sunlight reflects off the sail, radiation pressure drives the spacecraft outward away from the sun. If the sail material has a density of 600.0 kg/m3 and If the sail's area is 1.9106 m2. its thickness is 1 ?m, and the craft carries a 82.0 kg payload, what is its acceleration at the radius of the Earth's orbit?