1.

A particle moves in straight line in same direction for 20 seconds with velocity `3 m//s` and the moves with velocity `4 m//s` for another 20 sec and finally moves with velocity `5 m//s` for next 20 seconds. What is the average velocity of the particle?A. 3 m/sB. 4m/sC. 5m/sD. zero

Answer» Correct Answer - B


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