>Well now: 18000 mph = 8 km/sec = 800 sec at 1 g. Approx 3200 Km, or 2000
>miles.
>At 3g (reasonable for most people) 266 sec, about 200 miles.
>
>In New York to Los Angeles, you get about 8 minutes of microgravity (using
>3g).
>
>For more fun, the free fall trajectory will vary according to the time of day
>due to the moon....
>
I admit it - it was a WAG - I did not use a calculator.
Still, my 1 G guess came pretty close to constant accel/decel, with a
turn-around at mid trajectory.
Chuck Kuecker