Other Free Encyclopedias » Science Encyclopedia » Science & Philosophy: 1,2-dibromoethane to Adrenergic

Acceleration - History, Linear Acceleration, Circular Acceleration, Force And Acceleration

object direction motion time

The term acceleration, used in physics, is a vector quantity. This means that acceleration contains both a number (its magnitude) and a specific direction. An object is said to be accelerating if its rate of change of velocity is increasing or decreasing over a period of time and/or if its direction of motion is changing. The units for acceleration include a distance unit and two time units. Examples are m/s2 and mi/hr/s. Sir Isaac Newton (1642-1727) in his second law of motion defined acceleration as the ratio of an unbalanced force acting on an object to the mass of the object.


User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or