A particle reaches its highest point when it has covered exactly one half of its horizontal range. The corresponding point on the displacement -time graph is charecterized by :

The average velocity of a particles is equal to its displacement-time graph ?

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 :

A particle is projected with speed u at angle theta to the horizontal. Find the radius of curvature at highest point of its trajectory