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q

Asked by gpnkumar0 2nd October 2017, 11:27 AM
Answered by Expert
Answer:
The graph given is an acceleration-time graph. Hence, the area under the curve gives a change in velocity.
 
 
Change in velocity = area = A(Trapezium ABCD) + A(Triangle DEF) = [(3.5+2)×5]/2 + (0.5×5)/2 = 13.75 + 1.25 = 15
 
Now, change in velocity = V4 - V0 = 15
So, V4 = 15 + V0 = 15 - 2.5 = 12.5 m/s
 
Hence, the correct answer is option C.
Answered by Expert 25th October 2017, 3:09 PM
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