Youtor
Acceleration
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=e5Gl2LLLAGo
Follow us at: https://plus.google.com/+tutorvista/ • • Check us out at http://physics.tutorvista.com/motion/... • Definition of Acceleration • In physics, and more specifically kinematics, acceleration is the change in velocity over time.Because velocity is a vector, it can change in two ways: a change in magnitude and/or a change in direction. In one dimension, i.e. a line, acceleration is the rate at which something speeds up or slows down. However, as a vector quantity, acceleration is also the rate at which direction changes. Acceleration has the dimensions L T−2. In SI units, acceleration is measured in metres per second squared (m/s2). • In common speech, the term acceleration commonly is used for an increase in speed (the magnitude of velocity); a decrease in speed is called deceleration. In physics, a change in the direction of velocity also is an acceleration: for rotary motion, the change in direction of velocity results in centripetal (toward the center) acceleration; where as the rate of change of speed is a tangential acceleration. • Please like our facebook page • / tutorvista
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