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A particle is projected from the ground ...

A particle is projected from the ground with an initial speed of v at an angle `theta` with horizontal. The average velocity of the particle between its point of projection and highest point of trajectroy is :

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`overset(vec)V_("avg")=(overset(vec)v+overset(vec)u)/(2)=(u cos theta hati+(u cos theta hati+u sin theta hatj))/(2)`
`V_(aV)=(V)/(2)sqrt(1+3 cos^(2)theta)`
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