About 18 years assuming I'm using the right formula: http://www.wolframalpha.com/input/?i=acceleration+formula&rawformassumption=%7B%22FS%22%7D+-%3E+%7B%7B%22S

About 18 years assuming I'm using the right formula: http://www.wolframalpha.com/input/?i=acceleration+formula&rawformassumption=%7B%22FS%22%7D+-%3E+%7B%7B%22SpeedAccelerationTime%22,+%22t%22%7D%7D&rawformassumption=%7B%22F%22,+%22SpeedAccelerationTime%22,+%22a%22%7D+-%3E%229.822E-6+m%2Fs%5E2%22&rawformassumption=%7B%22F%22,+%22SpeedAccelerationTime%22,+%22v%22%7D+-%3E%225748+m%2Fs%22 http://www.wolframalpha.com/input/?i=acceleration+formula&ra...