Determine at what speed must an object be moving

Reference no: EM13649914

1- a spaceship of a triangular shape, having a length twice itswidth, is capable of relativistic speeds. how fast would it have tomove so that to a stationary observer its length would be equal itswidth?

2- at what speed must an object be moving in order that it haskinetic energy 1.50 times its rest energy?

Reference no: EM13649914

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