Acceleration of two identical particles moving in a straight line are as shown in figure. The corresponding a-t graph of their centre of mass will be:

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answer is A.

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Detailed Solution

At t = 0, aCM=5ms-2 and t = 10 s, aCM=10 ms-2So, the graph is a straight line with intercept 5 ms-2 and slope 12ms-2.

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