4000m
The advantage = you can experience "flying" and floating!!
Not really, but on other parts you experience weightlessness
Airplanes do not fly high enough to be unaffected by the force of gravity.
The astronauts would experience weightlessness.
airline ticket is weightless. but its price is hight according to travelling distance. may be that would be the reason
The weightless astronaut landed on Mars, which has no gravity.
No. It is light -- not heavy, but it is not weightless.
no. If they were weightless they would not fall.
Something is weightless when there are no gravitational forces acting upon it.
not on earth but it can be simulated underwater, in aircraft, you can be weightless in outer space
No, quite the opposite. They experience up to three times the normal force of gravity during the launch.
The statement that astronauts on the Moon are weightless is true.