# The Components of Newton's Laws of Motion

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Velocity is the time rate of change of position of an object in a particular direction. Velocity along a straight line is known as linear velocity and is commonly measured by meters per second (m/s). Since both speed and direction are implemented in the measurement velocity the direction must be given. Velocity is a vector quantity, which includes magnitude or speed and a direction into account. An object doesn’t need to move in a straight-line path to have linear velocity. Instantaneous velocity of any point of an object undergoing circular motion is a vector quantity. When an object is forced to follow a curved path it has instantaneous linear velocity at any point of its travel. Velocity is calculated by dividing the time it took to travel the distance into the distance it traveled or V=d/t (Rusk, Dr. Rogers D. (2014). Velocity. In AccessScience. McGraw-Hill Education. Retrieved from http://www.accessscience.com/content/velocity/729500) Acceleration is the time rate of change in velocity. Instantaneous acceleration is the limit of the rate of change in velocity to the time taken to change velocity. When the acceleration is constant, the average acceleration and the instantaneous acceleration are equal. When unbalanced forced act on an object, the objects will undergo acceleration. A force is the influence on an object, which causes it to accelerate. If the object doesn’t change direction the object will have a constant acceleration. Acceleration is