Velocity

Velocity ( \(v\) ) (VEL) is the rate of change or displacement with time.  Velocity is a vector quantity having magnitude and direction. The scalar absolute value of magnitude of the velocity vector is the speed of the motion. 

Speed ( \(u\) ) is the rate of change or distance with time.  Speed is a scalar quantity having direction.

Speed is a scalar quantity having direction, some of these include area, density, energy, entropy, length, mass, power, pressure, temperature, volume, and work. 

Velocity is a vector quantity having magnitude and direction, some of these include acceleration, displacement, drag, force, lift, momentum, thrust, torque, and weight.

Velocity Formula

\(\large{ v = \frac { d } { t }   }\)

\(\large{ v = v_i + at  }\)

Where:

\(\large{ v  }\) = velocity

\(\large{ a  }\) = acceleration

\(\large{ d  }\) = displacement

\(\large{ t  }\) = time

\(\large{ v_i  }\) = initial velocity

Solve for:

\(\large{ t = \frac { d } { v }  }\)

\(\large{ v_i = v - at  }\)