What did Dr Allan McInnes say was required in order to launch a satellite into space, at the necessary altitude and speed? What is required and why?

Dr Allan McInnes explains why satellites need large rockets to launch them into orbit and why many satellites are launched from near the equator it’s because Satellites need to be placed in orbit high above the Earth’s atmosphere so that the drag of the atmospheric gases doesn’t make the orbiting satellite slow down.

An altitude of 100 km has been adopted by the United Nations as a working definition of where the Earth’s atmosphere ends and space begins.

Pretty sure the answer is b : )

A) acceleration. this seems to be the one that makes sense.