A scientist with mass m is sitting on one end of a lifeboat of uniform density with mass 3m. When he spots a rescue chopper in the distance, he walks a distance of L to the other side of the lifeboat to wave for help. Which of the following statements best characterizes the motion of the lifeboat? A. The lifeboat shifts by the same distance traversed, but in the opposite direction of his motion.
B. The lifeboat does not shift forward or backward as a result of the scientist's motion.
C. The lifeboat shifts by L/4 in the opposite direction of the scientist's motion.
D. The lifeboat shifts in the same direction as the scientist's motion with constant velocity.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

i would say