Kinetic energy is defined as ½ mv2, where m is the mass of the object, and v is the velocity (or speed). Velocity can be measured in miles per hour, or in meters per second (for example). Enter the letter of the following possibilities that could NOT be considered a unit of energy.
a. Kg (meter^2/sec^2)
b. Inch (meter-gram/second-year)
c. gram (cm^2/second^2)
d. kg (mile/hour^2)
e g (nanometer^3/week-hour-foot)

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.