व्हाई इज आर्कोलॉजी एंड इंपॉर्टेंट हेल्ड टुडे शॉर्ट आंसर
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Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down. ... Acceleration is defined as the change in the velocity vector in a time interval, divided by the time interval.
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