Satellite Motion - A Tutorial from The Physics Classroom

The above link is a one page summary of satellite motion.
Please read it and answer these questions in Journal 2b: Satellite Motion:
a.) What are the forces acting on a satellite?
b.) How would a satellite move in the absence of gravity?
c.) In what direction does gravity accelerate an object?
d.) What is the curvature of the earth?
e.) How far does an object fall in the first second?
f.) How fast horizontally must a satellite move to fall around the earth?
g.) What is the result if the satellite is given a lesser speed?
h.) What is the result if the satellite is given a greater speed?
i.) Is there an upper limit on the speed a satellite can be given and still orbit the earth?