Awoman riding a ski lift with a constant velocity of 2.1 m/s up to the top of the hill suddenly hears a loud noise. as she turns to see a fighter jet doing acrobatics involving sharp turns, she accidentally knocks her skis off the lift. in the moment afterwards, which two objects have the same inertial frame of reference?
a. the skier and her skis
b. the skier and the lift
c. the skis and the ground
d. the pilot and the jet

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?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples