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if something has centripetal acceleration it means that it's moving with constant speed around a circle and is always accelerating toward the center; also the acceleration is always at a right angle to the velocity. This is a real acceleration or force, versus the centrifugal acceleration, which is fake.. centripetal acceleration is when the acceleration is "inward seeking" and is called the centripetal acceleration..[Edit this definition]
the rate of change of velocity is known is acceleration. the rate of change of velocity. When an object accelerates, it might be speeding up, slowing down, or changing direction.. Rate at which velocity changes . the change of velocity per unit time is called as acceleration. . . moving very fast. change in velocity divided by the amount of time needed for that change to take place; occurs when an object speeds up, slows down, or changes direction.[Edit this definition]
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