17. Two rocks are thrown off a cliff at the same height. Rock A is thrown horizontally at 0 degrees with a velocity of 14 m/s and lands 45m from the base. Rock B is dropped straight down from
the outside edge of the cliff.
If both rocks were released simultaneously, which one should strike the ground first?

A-Depends on height of cliff
B-Rock A
C-Rock B
D-They will strike the ground at the same time

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.

Answer would be

The correct option is this: the sound waves from the two trombones have slightly different frequencies.from the question given above, we are told that the loudness of the sounds were increasing and decreasing, this is because the frequencies of the two sounds are different. the means that the number of waves that pass a fixed point in a given amount of time differ for both sounds.