Question1
Assume that you required making a pen for some small animals. You have 12 of fencing. You decide to make a circular pen, since if you wish to enclose an area using a given length of fencing, then a circular fence encloses a larger area than a fence of any other shape. What is radius of the pen?
Question2
Which state is best illustrates kinetic friction?
A sled pushed from one side of an ice rink to the conflicting side begins to slow down as it moves.
A car moves next to a highway without its tires skidding.
The sole of your shoe stays firmly in place as your friend tries to push you forward.
A satellite circles earth frequently without slowing down to any observed degree.