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A boy is moving with velocity 30 m//s to...

A boy is moving with velocity `30 m//s` towards East. After `10s`, its velocity becomes `40m//s` towards North. The average acceleration of the body is

A

`7m s^(-2)`

B

`sqrt7 ms ^(-2)`

C

`5 ms ^(-2)`

D

`1ms ^(-2)`

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Verified by Experts

The correct Answer is:
C
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