Different types of speedīasically, there are four different types of speed in physics and each are explained below: Hence speed is a scalar quantity and it can never be a negative value. The direction of motion is not considered. Speed gives only a quantitative idea about how fast or how slow an object is moving. ![]() The SI unit of speed is metre/second and its dimensional formula is Speed of a particle is defined as the distance covered by it in unit time or it is the time rate of change of distance. What does speed mean and what is its formula?
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