-- The acceleration due to gravity is 32.2 ft/sec² . That means that the
speed of a falling object increases by an additional 32.2 ft/sec every second.
-- If dropped from "rest" (zero initial speed), then after falling for 4 seconds,
the object's speed is (4.0) x (32.2) = 128.8 ft/sec.
-- 128.8 ft/sec = 87.8 miles per hour
Now we can switch over to the metric system, where the acceleration
due to gravity is typically rounded to 9.8 meters/sec² .
-- Distance = (1/2) x (acceleration) x (time)²
D = (1/2) (9.8) x (4)² = 78.4 meters
-- At 32 floors per 100 meters, 78.4 meters = dropped from the 25th floor.
The 5 points are certainly appreciated, but I do wish they were Celsius points.
