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Q.

Is it true that when a car starts motion from rest and increase its velocity then its acceleration is positive?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
An object undergoes change in velocity over interval of time. Then the object is in acceleration motion.

acceleration = \frac{change in velocity}{time taken}

For an object moving from rest and increase to v in a time t. the acceleration of an object is said to be positive it has same direction of velocity. If both the acceleration and velocity of an object is in same direction then the acceleration of object is positive.

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