A body goes from C to D with a velocity of 20 m/s and comes back from D to C with a velocity of 30 m/s. The average velocity of the body during the whole journey is:
A
25 m/s
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B
Zero
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C
24 m/s
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D
26 m/s
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Solution
The correct option is B
Zero
Average velocity is given by Total displacementTotal time In this case, as the body comes back to the initial point, the net displacement is zero. So, average velocity = 0