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A body travelling with uniform accelerat...

A body travelling with uniform acceleration crosses two points A and B with velocities `20 ms^(-1)` and `30 ms^(-1)` respectively. The speed of the body at mid-point of A and B is

A

`24ms ^(-1)`

B

`25ms ^(-1)`

C

`25.5ms ^(-1)`

D

`10sqrt6ms ^(-1)`

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The correct Answer is:
C
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