7. A stone is thrown horizontally from the top of a building, with an initial velocity of 1,000 ft/sec. At the
same instant another stone is dropped from rest.
A. Compute
the position and velocity of the latter after 3 sec. B. How
far has the first stone traveled horizontally during this
same time? C. How far has it traveled vertically? D. What
are the hor i zontal and vertical components of its velocity
after 3 sec?