light above the Earth's atmosphere has an intensity of 1.39 kW/m2. If this is reflected straight back from a mirror that has only a small recoil, the light's momentum is exactly reversed, giving the mirror twice the incident momentum. Calculate the force per square meter of mirror (in N/m2). b) Very low mass mirrors can be constructed in the near weightlessness of space, and attached to a spaceship to sail it. Once done, the average mass per square meter of the spaceship is 0.162 kg. Find the acceleration (in m/s2) of the spaceship if all other force
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Sunlight above the Earth's atmosphere has an intensity of 1.39 kW/m2. If this is reflected straight back from a mirror that has only a small recoil, the light's momentum is exactly reversed, giving the mirror twice the incident momentum. Calculate the force per square meter of mirror (in N/m2).
b) Very low mass mirrors can be constructed in the near weightlessness of space, and attached to a spaceship to sail it. Once done, the average mass per square meter of the spaceship is 0.162 kg. Find the acceleration (in m/s2) of the spaceship if all other forces are balanced.
c) How fast (in m/s) is it moving 24 hours later? (Assume the spaceship started from rest.)
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