A projectile is projected from the ground with an initial speed of \( \mathrm{v} \) at an angle ...

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A projectile is projected from the ground with an initial speed of \( \mathrm{v} \) at an angle \( \theta \) with horizontal. The average velocity of the particle between its point of projection and highest point of trajectory is
(1) \( \frac{\mathrm{v}}{2} \sqrt{1+2 \cos ^{2} \theta} \)
(2) \( \frac{\mathrm{v}}{2} \sqrt{1+2 \cos ^{2} \theta} \)
(3) \( \frac{v}{2} \sqrt{1+3 \cos ^{2} \theta} \)
(4) \( v \cos \theta \)
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