A boy goes from a to b with a velocity of and comes back from b to a with a velocity of 20 m per minute 30 metre per minute . The average velocity of the boy during the whole journey is
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11
Answer: Zero
Explanation:
The initial point and final point of the object is same.
So, the displacement is zero.
Velocity=Displacement/Time
=0/Time
=0
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7
24m/min
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