A particle moves towards east with velocity $5\ m/s$ . After $10\ seconds$ its direction changes towards north with same velocity. The average acceleration of the particle is
A particle moves towards east with velocity $5\ m/s$ . After $10\ seconds$ its direction changes towards north with same velocity. The average acceleration of the particle is
- A
Zero
- B
$\frac{1}{{\sqrt 2 }}\ m/s^2\ N-W$
- C
$\frac{1}{{\sqrt 2 }}\ m/s^2\ N-E$
- D
$\frac{1}{{\sqrt 2 }}\ m/s^2\ S-W$
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- [KVPY 2016]
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