Pls help me experts

Dear Student,

We can find the velocity from acceleration time graph by finding area between curve and time axis.

So, from 2 s to 4 s

area under a-t graph = area of the square region = length x breadth


velocity from 2s to 4s = v1 = 2s x (-4)m/s2
v1 = - 8 m/s

Now as 3 s lies in this region, the velocity at 3 sec is also - 8 m/s ( -ve shows retardation in velocity).

Therefore, option '4' is correct.

Hope this information will clear your doubts about the topic.

If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.



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