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IAmPat
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Homework Statement
At the Aircraft Landing Dynamics Facility located at NASA's Langley Research Center in Virginia, a water-jet nozzle propels a 46,000 kg sled from zero to 400 km/hour in 2.5 seconds. Assuming a constant acceleration for the sled, what distance does it travel during the speeding-up phase (meters)?
Homework Equations
The Attempt at a Solution
400km/h = 400,000 m/h
3600 seconds in 1 hour
400,000 * 3600 = 1,440,000,000 m/s = Final Velocity
Vo = 0 m/s
Vf = 1,440,000,000 m/s
t = 2.5s
With a constant acceleration that would mean
a = 1,440,000,000 / 2.5 = 576,000,000 m/s^2
but if I multiply the acceleration by 2.5 I end up with my original final velocity, which doesn't make sense... Am I missing a force or something else? This seems like it should be an easy problem, but for some reason I'm just blanking on it.