What is speed in Physics?

When we see some activities like a running boy, moving bus etc, only one question put in our mind that how these things are moving. For this one word is motion in Physics. The concept of motion is described by using some terms like velocity, speed, distance; acceleration etc. motion is described as changed in the position of moving object at an instant of time or period time.

Speed is one of the basic parameter for motion. It is quite different with speed as it is not only covered length or distance. It is a scalar quantity with only magnitude not direction. It was first discovered by Galileo. He gave the formula and definition of speed that is distance divided time. It can be calculated in terms of constant, angular, Instantaneous, and average speed. Letƒ¢¢€š¬¢€ž¢s discuss about speed, its calculation, and its different types.

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