"v" is short for velocity. Now, "velocity" is not exactly the same as "speed" (velocity includes the direction - in other words, it is a vector), so it may be a misnomer in some cases. I believe "s" is avoided because the symbol is often used for distances.
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VA
Speed v=squareroot(Gm/r).
v=dt velocity (speed) = distance x time, i think
when something moves with constant angular speed (w), as in a rotating disk, the speed (v) as you move away from the center depends on distance (r), but the angular speed does not. Mathematically, v = wr.
Velocity/speed.
Speed is equal to the change in distance over the change in time, or V = D/T where V is speed, D is distance and T is time. If you mean the drug "amphetamine" know as "speed" the formula is C9H13N (1-phenylpropan-2-amine) Correction: [No, actually V doesn't stand for speed, V is velocity.] Correction to the correction v with an arrow above it is velocity. small case v is speed but in this formula the capitol V is volume so that is wrong
VA
kinetic energy is proportional to square of speed. ke=.5m*v*v
S is usually used for position and v for velocity or speed.
To obtain instantaneous speed you will need to utilize the formula v = speed multiplied by time if you have the speed already. If you do not have the speed use v = dx/dt.
the best angle is "45 degree" because the air speed coming out of the fan is giving by this equation V=v.tanθ were : V: air speed,,, v: is the blades speed and we got the maximum of the speed by making the angle 45
Speed is equal to the change in distance over the change in time, or V = D/T where V is speed, D is distance and T is time.
The Fear of Speed - 2002 V is rated/received certificates of: Australia:R
Using the universal wave equation which is v=fλ where v is speed, f is frequency and λ is wavelength For example: If you have wavelength of 0.090m and the frequency of said wave is 4.5Hz, the speed would be: v=(4.5Hz)(0.090m) therefore v=0.405m/s The speed of the wave is 0.405m/s
it is just the same equation for average speed v=d/t, unless the object is accelerating. Then the formula is v(instant) = v(initial) + at.
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Speed v=squareroot(Gm/r).