Annotating Competing Designs • Closely examine and annotate each design to record your observations and questions.
Note the ways that the designs are different and record your ideas about how the
differences will affect the speed of the roller coaster car.
Think about the key concepts you learned while investigating the spacecraft problem,
which are posted on the classroom wall.
.
After you have considered and annotated each design, discuss the following question with your
partner
Which design do you think will launch the roller coaster car the fastest?

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.  

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

you can cut your hand off if your not