1.

A body goes from A to b with a velocity of 20m/s and comes back from B to A with a velocity of 30m/s. The average velocity of the body during he whole journey is

Answer»

zero
25m/s
24m/s
none of these

SOLUTION :AVERAGE velocity
`=("Total DISPLACEMENT covered")/("Total time taken")`As the body comes BACK to the starting point, total displacement is zero


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