If i have a kinematic equation vf^2=vi^2-2*a(xf-xi), how can i solve for xi step by step

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Explain earth's motion, using the terms "precession" and "rotation" in your answer.