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Q.

The velocity-time graph, as shown in Fig. 1.30, shows the motion of a cyclist. Find its velocity.


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a

20 ms-1

b

30 ms-1

c

10 ms-1

d

40 ms-1 

answer is A.

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Detailed Solution

The velocity of the cyclist is 20 ms-1.
As we can see from the graph, the line is straight and parallel to the axis, which means the motion is uniform.
And from the graph, we can see that the Y-axis represents the velocity, and the X-axis represents the time. And in the graph, the line starts from 20 which indicates velocity. So,
The velocity of the cyclist, = 20 ms-1
 
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