4 I may be wrong though
about 2 seconds
4
At least 2 seconds of travel time between vehicles.
5 seconds is official for skateboards and other sport vehicles.
21.5 seconds
Increase to four seconds.
That depends on its initial velocity and its acceleration. V1 = V0 + a * t
0.81 seconds
It is 20 seconds.
-- 21.3 seconds -- 21.6 seconds -- 21.9 seconds ? ? ? ?
A day usually has 86400 seconds, some days it has 86401 seconds (when an extra second is added). log286401 = log(86401) / log(2) = 16.4, so 17 bits is sufficient to represent those seconds.
4-5 seconds