A particle moves towards east with veloc...

A particle moves towards east with velocity `5m//s`. After `10 seconds` its direction changes towards north with same Velocity. The average acceleration of the particle is

zero

`(1)/sqrt(2)m//s^(2)N-W`

`(1)/(sqrt(2))m//s^(2)N-W`

`(1)/(sqrt(2)m//s^(2)S-w`

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