wt do u mean by acceleration?
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ACCELERATION- it is the measure of the change in the velocity of an object per unit time .
If the velocity of body decreases, the ACCELERATION is negative..
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acceleration is rate of change of velocity and velocity is rate of change of speed.
for example, if a particle covers 10m in the first one second and 20 m in the second one second,
30 m in the third one second, then we say acceleration is 10 m/sec²
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