An astronaut wishes to visit the Andromeda galaxy, making a one-way trip that will take 27.5 years in the space-ship's f

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An astronaut wishes to visit the Andromeda galaxy, making a
one-way trip that will take 27.5 years in the
space-ship's frame of reference. Assume the galaxy is 2.00 million
light years away and his speed is constant.
≈ 1 −
for x << 1.
(Complete the equation for your answer.)
1 −
c
(a) How fast must he travel relative to Earth? The following
approximation will prove useful:
(b) What will be the kinetic energy of his spacecraft, which has
mass of 1.06 106 kg?
c) What is the cost of this energy if it is purchased at a
typical consumer price for electric energy, 13.0 cents per
kWh?
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