A spaceship and its occupants encompass a net mass of 150,000kg. 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 the energy. Determine how much mass will be transformed to energy to accelerate the spaceship to this speed?
Suppose that the acceleration is rapid, so the speed for the whole trip can be taken to be 0.60c and ignore reduce on net mass for the calculation. Determine how long will the trip take according to the astronauts on board?