I have been studying videos of swimmers and find what was once called the "S" stroke has almost disappeard.
I have noticed that flyers use it. But crawl swimmers have modified it so much that it is almost gone.
Has it been replaced completely or was it an optical illusion? Did underwater film show us it did not exist.
Sound of speed in Water is something like 3000 Mph or is it 3000 knots per HR??Knots notes: Knot is already a unit of speed (equal to one nautical mile per hour)
And if you want to calculate the speed of sound in water just follow the simple empirical equation below for the speed of sound in sea water:
c(T, S, z) = a1 + a2T + a3T2 + a4T3 + a5(S - 35) + a6z + a7z2 + a8T(S - 35) + a9Tz3
where T= temperature in degrees Celsius, S = salinity in parts per thousand and z = depth in meters, respectively.
The constants a1, a2, ..., a9 are: a1 = 1448.96, a2 = 4.591, a3 = -5.304×10-2, a4 = 2.374×10-4, a5 = 1.340, a6 = 1.630×10-2, a7 = 1.675×10-7, a8 = -1.025×10-2, a9 = -7.139×10-13
But back on topic… good observations Coach T.
Sound of speed in Water is something like 3000 Mph or is it 3000 knots per HR??Knots notes: Knot is already a unit of speed (equal to one nautical mile per hour)
And if you want to calculate the speed of sound in water just follow the simple empirical equation below for the speed of sound in sea water:
c(T, S, z) = a1 + a2T + a3T2 + a4T3 + a5(S - 35) + a6z + a7z2 + a8T(S - 35) + a9Tz3
where T= temperature in degrees Celsius, S = salinity in parts per thousand and z = depth in meters, respectively.
The constants a1, a2, ..., a9 are: a1 = 1448.96, a2 = 4.591, a3 = -5.304×10-2, a4 = 2.374×10-4, a5 = 1.340, a6 = 1.630×10-2, a7 = 1.675×10-7, a8 = -1.025×10-2, a9 = -7.139×10-13
But back on topic… good observations Coach T.
