Hi, I'd appreciate any help on this!
1. With that velocity must an object be thrown upward from ground level to reach a max. height of 200 m?
2. The acceleration due to gravity is -1.6 m/s on the moon. If a stone is dropped from a cliff and hits the surface 20 seconds later, what was its velocity at impact?
For the record I am against making the numbers easier on the students. There was a survey done (sometime in the mid 80s?) where students who had done all their schoolwork in problems where the numbers always canceled out nicely etc, etc. This was fine until they got to the real world and the numbers got ugly. The problem was that they had no confidence in their answers if it didn't come out to be a nice integer.
For the Applied Sciences anyway, I say that decimal numbers rule!
In this day and age of ubiquitous technology, that you would prescribe g = 10 rather than 9.8 in "an effort to make the numbers "easier" for the students" is diabolical.
Some of the folk sitting on these curriculum panels need to have a good hard look at themselves ....