Answer:
the net force is acting upon the object. The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude. Hope this helps you.
Answer:
Kepler did and stated that planets move in a elliptical orbit with the sun in the center.
50 degrees because the would most likely equal out