30 ft = 360"
360" = 9144mm
9144mm = 9.144m
Speed = Distance/Time = 9.144/1 = 9.144m/s = 20.574mph
Not being funny OT, but even for a Tribal Elder that's pretty weak. You need to do some more vigorous wrist exercises.
I know I'm no RIP Bartons Tash...