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Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which...

Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives the illusion of normal gravity during the flight.

(a) If it starts from rest, how long will it take to acquire a speed 0.21 times that of light, which travels at 3.0 ✕ 108 m/s?

i got 6.43e6 s

(b) How far will it travel in so doing? i cannot get this right. it is also asking in km.

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