You are going to wash the skylights in your kitchen. the skylights are 7.2 m above the ground. you connect two garden hoses together-a 0.80-cm-radius hose to a 1.0-cm-radius hose. the smaller hose is held on the roof of the house and the wider hose is attached to the faucet on the ground. the pressure at the opening of the smaller hose is 1 atm, and you want the water to have the speed of 6.0 m/s .
what should be the speed at ground level in the large hose? what should be the pressure at ground level in the large hose?

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.

Bag of bolts weight 29.4n