An 800-kg car moving at 20m/s takes a turn around a circle with a radius of 12.2 m. Determine the acceleration and the net force acting upon the car.

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?

Why does the liquid rise up through the dip tube when the valve is open

Aspring that is stretched 2.6 cm stores a potential energy of 0.053 j. what is the spring constant of this spring?