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.
A scalar quantity is one which has only a magnitude - by contrast, a vector quantity has magnitude and a direction. The existence of a direction, on a simplistic level, can be ascertained by considering whether the quantity would make sense with a negative sign on the front. A negative acceleration is simply a deceleration, so this must be a vector quantity. A negative displacement is a displacement backwards, so this is a vector too. A negative velocity is a speed backwards, so this is vector also.