It means twenty one and twenty two hundredths of some unspecified units of distance per some unspecified unit of time in an unspecified direction. What it boils down to it that it means nothing.
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The formula for velocity is (v = d/t) or (velocity = distance/time).
Velocity is distance / time
velocity = frequency / wavelength, I believe.
Final velocity v = u + at
Since speed or velocity = distance/time ,its dimensional formula =L/T = [MoLT-1]