Amodel train engine was moving at a constant speed on a straight horizontal track. as the engine moved along, a marble was fired into the air by a spring in the engine's smokestack. the marble, which continued to move with the same forward speed as the engine, rejoined the engine 1 sec after it was fired. the measure of the angle the marble's path made with the horizontal was 57 degrees. use the information to find how high the marble went and how fast the engine was moving.

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.