A spaceship and its occupants encompass a net mass of 150,000 kg. The occupants would like to travel to a star which is 25 light-years away at a speed of 0.60c.To accelerate the engine of the spaceship changes mass directly to energy. Determine how much mass will be transformed to energy to accelerate the spaceship to this speed?
Suppose the acceleration is quick, so the speed for the whole trip can be taken to be 0.60c and ignore reduce on net mass for the computation. Explain how long will the trip take according to the astronauts on board?