Which of the following is most accurate statement about both light and sound wave

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?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?