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A body covers 200 cm in the first 2 sec ...

A body covers 200 cm in the first 2 sec and 220 cm in the next 4 sec under constant acceleration. Then the velocity of the body after 7 sec is

A

`-15` cm/s

B

115 cm/s

C

10 cm/s

D

20 cm/s

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Verified by Experts

The correct Answer is:
C
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