How long would trip take according to an earthbased observer

Reference no: EM13304569

A star is about 6.00 light years from Earth.

(a) To reach this star by a spaceship in 4.0 years (ship time), how fast must you travel? (Give your answer in terms of c.)

(b) How long would the trip take according to an Earth based observer?

Reference no: EM13304569

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