Speed and Velocity
What is speed?
Its the answer to the question - how quickly did you you cover a distance. Following is the formula to measure speed.
$$Speed = \frac{Distance}{Time}$$
What is velocity?
Its the answer to the question - how quickly did you get displaced. Following is the formula to measure velocity.
$$Velocity = \frac{Displacement}{Time}$$
The unit of measurement of both speed and velocity is m/s.
Instantaneous and Average
Instantaneous speed is the speed at that point of time. Say you are driving a car. The speed you see in a speedometer is the Instantaneous speed of your car. Whereas average speed is the average over a period of time.
Similarly instantaneous velocity is the velocity at that point of time and average velocity is the average over a period of time.
Speed is a scalar quantity whereas velocity is a vector quantity.
We have simulations and games on the topic. Check the HTML5 versions HERE.
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