what is acceleration?
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Answer:
Acceleration of a body is defined as the rate of change of velocity with time
Acceleration =
Change in velocity
Time taken for change
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Acceleration
✿ A body said to have acceleration ,
☛ If there is change in the magnitude of velocity .
☛ If there is change in the direction of velocity
★ Acceleration is defined as the ratio of the change in velocity of the body and the time taken to undergo this change .
✷ Important Points :
★ Acceleration may be zero or positive or negative.
☛ The negative acceleration is called retardation .
☛ The Rate of increase in velocity of a body is called positive acceleration .
☛ The rate of decrease in velocity of a body is called retardation .
☛ IT is a vector quantity .
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