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If a space ship is traveling with a constant acceleration of 75 m/s^2 and travels for three weeks, how far did it travel and what was it's velocity before it stopped?

 Dec 18, 2019
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You do not state an initial velocity, so let's assume it is 0.

vf = vo + at        vo = original velocity = 0

vf = at       a is in seconds   75m/s^2      t is in weeks and one or the other has to match 

     convert weeks to seconds    3600 sec/hr x 24 hr/day x 21 day = t

        multiply this by a to find the final velocity (divide by 1000 m/km to get km/sec)

 

Then for the distance , starting at xo = 0

 

xf = xo + vot + 1/2 a t^2        vo and xo = 0       make sure a and t are in the same time units..... Done !

 Dec 18, 2019
edited by ElectricPavlov  Dec 18, 2019

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