Aprojectile is fired with a velocity �⃗ at the entrance of a horizontal tunnel of length and height hh. determine the minimum value of the speed and the corresponding value of the angle thetatheta for which the projectile will reach at the other end of the tunnel just about touching the top of the tunnel (assume that this brief interaction between the particle and tunnel does not alter the path of the projectile in any significant way).

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

What are you trying to ask?

Sorry i don’t know what to do

Domain eukarya; kingdom plantae should be the answer.