1. How much energy is required to accelerate a spaceship with a rest mass of 133…

1. How much energy is required to accelerate a spaceship with a
rest mass of 133 metric tons to a speed of 0.558
c?
2. Every day our Earth receives 1.55×1022 J energy
from the Sun. If we were able to use 0.75 percent of this energy to
accelerate spaceships, then how many missions would be possible in
one year?