(January 21, 2010 at 3:51 pm)Tiberius Wrote: Doesn't that fail to account for air-resistance though? My point was that the ball would slow down as it climbed higher. I thought you had to maintain escape velocity in order to escape the Earth's pull? Hence why rockets have...well...rockets
It would slow down over time due to loss of energy, with the air and the opposing force of gravity, but the deceleration due to air resistance would actually be decrease over distance upwards.
You could shoot a projectile out of the atmosphere given the average velocity of the projectile over the distance to escape gravity was greater than the escape velocity.
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