Answer:
a)

b)

c)

Step-by-step explanation:
From the question we are told that
Distance to Betelgeuse

Mass of Rocket

Total Time in years traveled

Total energy used by the United States in the year 2000

Generally the equation of speed of rocket v mathematically given by


where




Therefore


b)
Generally the equation of the energy E required to attain prior speed mathematically given by


c)Generally the equation of the energy
required to accelerate the rocket mathematically given by


