Question

Notes: For full credit, show all of the equations and calculations that you use. In Relativity, you usually need to keep 5 or 6 significant digits. So, do not round off the numbers as you do your calculations.

2. A spaceship moves through the Galaxy at a Lorentz factor Г-7 (speed of 0.98974e), a. How much energy would be involved in a head-on collision of the spaceship with a small space rock of mass 1 kg? [Note that, because velocity is relative, as measured by the spaceship, the rock hits the spaceship at a Lorentz factor-7.] b. Compare this with the energy of a hydrogen bomb, about 1x101"joules, by dividing your answer to part (a) by this number. Is space travel at speeds close to that of light hazardous?

6

Answer 1

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