1. The distance–time graph most closely represents an object moving with uniform motion is B.
2. The speed–time graph most closely represents an object travelling with uniform motion is D.
The motion of the object when it is moving with constant velocity or velocity is not changing with time, is called the uniform motion.
1. For uniform motion, equal distance is moved in equal interval of time. So, the best fit graph for uniform motion is B having linear relationship.
Thus, the correct option is B.
2. . For uniform motion, velocity is same at all times. So, the best fit graph for uniform motion is D having straight line parallel to x axis representing time.
Thus, the correct option is D.
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