Peabody /ËpiËbÉdi/ is a city in Essex County, Massachusetts, United States. At the 2010 census, the population was 51,251, and in 2014 the estimated population was 52,376. Peabody is located in the North Shore region of Massachusetts. 1 History.
Acceleration is a vector because it has a magnitude and a direction (Accelerating at a rate of 5 Miles Per Hour North). Speed is a scalar because it only has a magnitude (35 Miles Per Hour) . Velocity is the derivative of the acceleration and is also a vector (35 miles per hour North). Adam Â· 5 years ago. Thumbs up.
In other words, acceleration is the rate at which your velocity changes, because rates have time in the denominator. For acceleration, you see units of meters per second 2, centimeters per second 2, miles per second 2, feet per second 2, or even kilometers per hour 2. It may be easier, for a given problem, to use units such as mph/s (miles per hour per second).