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April 18, 2014

Homework Help: Physics

Posted by Jordan Stark on Monday, July 9, 2012 at 4:55pm.

A spaceship and its occupants have a total mass of 170000kg . The occupants would like to travel to a star that is 31 light-years away at a speed of 0.40c. To accelerate, the engine of the spaceship changes mass directly to energy.

How much mass will be converted to energy to accelerate the spaceship to this speed? Assume the acceleration is rapid, so the speed for the entire trip can be taken to be 0.40c, and ignore decrease in total mass for the calculation.

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