i was wondering if the calculations in the S1 tests were any more complex than these?
Absolutely!! but the basic principles remain the same - find examples below:
An a/c is flying at 540mph at FL320, and starts descending at 800feet per minute. How many miles will it travel before it reaches FL250?
Aircraft 40 nautical miles away, at 30,000 ft descending at 3000ft per minute and travelling at 240 knots.. can it make it?