A girl leaves her home. She travels in a car and returns home after covering 20 km in half an hour. What is her average velocity? Explain the reason of answer.
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Answer:
Explanation:
The average velocity of the girl is zero since she returned to her original position.
There are two displacements involved here in opposite directions and of equal magnitudes. If you add these two displacements you get zero.
Velocity is the change in displacement divided by change in time.
So zero divided by 1/2 hr gives zero.
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