What two conditions must be met in order for a projectile to go into orbit around the earth?

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What two conditions must be met in order for a projectile to go into orbit around the earth?

I think one is it must have a speed of 11.2 km/s.

2006-11-16 17:31:13 · 3 answers · asked by cult_king_666 1 in Science & Mathematics ➔ Astronomy & Space

3 answers

velocity-height and horizontal movement. 11.2 km/s in order to escape earth's atmosphere (air provides resistance against movement) above 50 km and movement in horizontal direction so that the object falls perpetually towards the earths gravity centre.

2006-11-17 06:54:11 · answer #1 · answered by César 2 · 0⤊ 0⤋

It must have a velocity equal to the orbital velocity at the altitude of orbit, and that velocity must be directed tangentially with respect to the center of the earth.

2006-11-16 17:51:07 · answer #2 · answered by gp4rts 7 · 0⤊ 0⤋

speed and mass

2006-11-16 17:38:14 · answer #3 · answered by bprice215 5 · 0⤊ 0⤋