A wheel and axle is made to rotate about a horizontal axis with the help of a body of 5.0kg
attached to a string wound around the axle. The radius of the axle is 10cm. the body falls
vertically through 5m in 10s from rest. Calculate the moment of inertia of the wheel.

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?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

What effects result when there is an impact between earth and an asteroid? check all that apply. a. massive flooding. b. extinction of many life forms. c.major earthquakes change in average global temperature. d. giant dust cloud