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What do you understand by the term acceleration? What is meant by its being positive or negative
Explain with example, Write its SI unit.
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Acceleration is the change of velocity in a unit time. It is denoted by 'a'. The SI unit of acceleration is m/s^2. Some examples when the acceleration can be negative- When we are moving in a car and we slow up the car the acceleration will come down and will be in negative.
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ACCELERATION IS CHANGE IN VELOCITY UPON TIME TAKEN.
POSITIVE ACCELERATION
IF THE VELOCITY OF AN OBJECTINCREASES WITH TIME IN DIRECTION OFMOTION OF THE OBJECT, THEN THE ACCELERATION WILL BE POSITIVE.
NEGATIVE ACCELERATION
IF THE VELOCITY OF AN OBJECT DECREASES WITH TIME, THEN THE ACCELERATION WILL BE NEGATIVE.
NEGATIVE ACCELERATION IS ALSO KNOWN AS RETARDATIONAND DECELERATION.
UNIT OF ACCELERATION IS METRE SQUARE
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