A moving object collides with a second object at rest on a frictionless surface, resulting in an elastic collision. Is the momentum of each individual object the same before and after the collision

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

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?

What occurs during a combustion reaction