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[[circled]] 3 [[/circled]]

SOME ORBITAL MECHANICS (not from Physics notes)

[[circled]] 1 [[/circled]]"WHAT'S AN ORBIT"

- DROP SOMETHING, IT FALLS [[arrow]] DOESN'T MOVE HORIZONTALLY

F TOWARD CENTER of EARTH

GRAVITY DOESN'T AFFECT HORIZONTAL MOTION, ONLY VERTICAL

[NEGLECT AIR RESISTANCE] [[image]] [[arrow left]]
FALLS, & TAKES CERTAIN TIME TO FALL
[[arrow up]] TIME IS DETERMINED BY GRAVITY (&HEIGHT)

[[image]] [[arrow left]] HORIZONTAL, UNAFFECTED BY GRAVITY
[[arrow left]] VERTICAL, GRAVITY ONLY

[[image]] FASTER HORIZ., ... GOES FARTHER & (SAME TIME TO COFER VERTICAL DISTANCE ... BUT GOES FURTHER IN THAT TIME

EXAMPLE: BULLET DROPPED & FROM RIFLE

NEXT STEP ... EARTH ISN'T FLAT

[[image]] [[arrow left]] SAME TIME TO TRAVEL THE VERTICAL DISTANCE ... BUT HASN'T HIT YET