149 metres = 488.8 ft approx.
If in 16.8 second the boat travels 149m then to know how long it travels in 1 second you devide 149 meters by 16.8. This gives you 8.86904761904761904761904761904761... but since it is after all a boat in water and so many factors affect it the answer does not need to be this accurate... 8.86 meters per second is good enough...
The dimensions of the White House are: Length: 168 feet (51.2 meters) Width: 85 feet 6 inches (26.1 meters); 152 feet (46.3 meters) including porticoes Height: 70 feet (21.3 meters) on the south side and 60 feet 4 inches (18.4 meters) on the north side, including the parapet; not including the parapet -- 60 feet (18.3 meters) on the south side and 50 feet 4 inches (15.3 meters) on the north side.
Five feet six inches !
15 feet.
21 feet
100.55 feet is 100.55 feet!
4 feet by 4 feet.
5,280 feet.
4 feet!
5280 feet.
A hundred feet of what?
75.85 feet