1. An object of mass mi=3kg, moving with a velocity of 20m/s in the positive x- direction, collides with and sticks to an object of mass m2=2kg moving with a velocity of 10 m/s in the negative x-direction. What the final velocity of the composite system

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

What is created when solids, liquids, an gases mix with one another

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?