The info is gathered in pieces from several locations on the ‘net… and from discussions on other boards. I can’t readily get you the source for the catapult info, as it was something I copied several years ago and forgot to note the source.

The Discovery channel http://science.howstuffworks.com/aircraft-carrier3.htm says

This totally steam-driven system can rocket a 45,000-pound plane from 0 to 165 miles per hour (a 20,000-kg plane from 0 to 266 kph) in two seconds!

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The aircraft weights come from Wiki.

http://www.voodoo-world.cz/hornet/info.html gives the landing approach speed of the F/A-18A/B/C/D as 134 knots.

http://www.navy.mil/navydata/navy_legacy_hr.asp?id=272, the official website of the USN, says “Super Hornet’s at-sea carrier qualifications demonstrated an impressive reduction in final landing approach speed — 10 knots slower than the F/A-18 C/D — which increases the safety margin and handling characteristics for our pilots. “. This means that the F/A-18E/F landing approach speed is ~124 knots!

The landing approach speed is with a certain amount of reserve fuel and the normal A2A missile load (but no bombs or full fuel tanks), so the aircraft could take off at that speed with the same load.