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Read the passage and answer the question below <br><br> Different objects may take different amounts of time to cover a given distance. Some of them move fast and some move slowly. The rate at which objects move can be different. Also, different objects can move at the same rate. One of the ways of measuring the rate of motion of an object is to find out the distance travelled by the object in unit time. This quantity is referred to as speed. The SI unit of speed is ms-1. To specify the speed of an object we require only its magnitude. The speed of an object need not be a constant. In most cases, objects will be in non-uniform motion. Therefore we describe the rate of motion of such objects in terms of their average speed. The average speed of an object is the total distance divided by the total time taken. If the speed of the object is v, then v = s/t, where s I the distance travelled and t is the time taken. <br><br> QUESTION : When an object covers unequal distances in equal intervals of time then it is said to be

$\begin{array}{1 1} (a)\; \text{uniform speed} \\ (b)\; \text{non-uniform speed} \\ (c)\; \text{uniform velocity} \\ (d)\; \text{non-uniform velocity} \end{array}$

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