How come in free fall you feel weightless even though gravity is pulling down on you? (ignore air resistance when answering this question).

You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating how much weaker gravity is 400 above the Earth's surface.

You are explaining to friends why astronauts feel weightlessorbiting in the space shuttle, and they respond that they thoughtgravity was just a lot weaker up there. Convince them and yourselfthat it isn't so by calculating how much weaker gravity is 400 kmabove the Earth's surface. Express answer as |?g/g|=____%

Mt. Everest is more than 8 000 m high. How fast would an object be moving if it could free fall to sea level after being released from an 8 000 m elevation? (ignore air resistance.)