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Plot and interpret a distance-time graph for a body moving with constant speed? 

Difficulty: Medium

An object moving with constant speed:

The speed of an object is said to be constant if it covers equal distances in equal intervals of time. The distance-time graph as shown in the figure is a straight line.

Its slope gives the speed of the object.

 

Consider two points A and B on the graph.

Speed of the objects = slope of line AB=  $\frac{Distance \: EF}{Time\: CD}  =\frac{20m}{10s} =2 \frac{2m}{s}$

The speed found in the graph is 2 ms-1

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