How manyuniversities benefitted when an emeritus professor won a distinguished award (which has included NobelPrizes in the past)? The fact of the matter is, given the cost-benefits of granting emeritus status, anyuniversity in question has always been far-and-away the winner.
where g is the acceleration of gravity. The value for g on Earth is 9.8 m/s/s. The above equation can be used to calculate the velocity of the object after any given amount of time when dropped from rest. Example calculations for the velocity of a free-falling object after six and eight seconds are shown below.
The Space Station hasn't escaped Earth's gravity at all; it's experiencing about 90% the pull that we feel on the surface. To avoid falling back into the atmosphere, you have to go sideways really, really fast. The speed you need to stay in orbit is about 8 kilometers per second.[4]It's a little less if you're in the higher region of low Earth orbit. Only a fraction of a rocket's energy is used to lift up out of the atmosphere; the vast majority of it is used to gain orbital (sideways) speed.ow fast is 8 km/s, anyway? I think the reason for a lot of confusion about these issues is that when astronauts are in orbit, it doesn't seem like they're moving that fast; they look like they're drifting slowly over a blue marble. But 8 km/s is blisteringly fast.