What do you mean by social problems and evils

What are the six basic purposes of government as outlined in the preamble to the constitution?

If a swimmer is traveling at a constant speed of 0.85 m/s,how long would it take to swim the length of a 50m olympic sized pool?

Annie and bart are coworkers. in fact, they share a cubicle wall. recently, they were involved in a fender-bender in the company parking lot. each blames the other for the accident, and the two have stopped speaking. would you advise them to try to settle their dispute through arbitration, mediation, or with a traditional lawsuit? why?