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Questions  >>  EAMCET  >>  Physics
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Q)

A particle is projected from the ground with an initial speed of v at an angle of projection θ. The average velocity of the particle between its time of projection and time it reaches highest point of trajectory is

(a)v21+2cos2θ(b)v21+2sin2θ(c)v21+3cos2θ(d)vcosθ

how to (c) answer
plz tell me fast
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