What is the average velocity of a projectile between the instants is crosses half the maximum height? It is projected with a speed u at an angle $\theta$ with the horizontal :

• A

  $\mathrm{u} \mathrm{sin\theta }$

• B

  $\mathrm{u} \mathrm{cos\theta }$

• C

  $\mathrm{u} \mathrm{tan\theta }$

• D

  $\mathrm{u}$