The speed (velocity) a falling object reaches after any given amount of time can be calculated by multiplying the rate at which its
velocity is increasing (32ft/sec2) by the length of time during which its velocity is increasing, in otherwords, the length of time it
falls.
A. Because circular loops are very difficult to construct.
B. Because clothoid loops have been found to be more aesthetically appealling to most people
C. Because circular loops put too much force on their passengers.