A body describes the first half of the total distance with velocity v1 and the second half with velocity v2. The average velocity is :(A) \(\cfrac{v_1 +v_2}{2}\)(B) \(\cfrac{1}{v_1}+\cfrac{1}{v_2}\)(C) \(\cfrac{v_1 \,v_2}{v_1+v_2}\)(D) \(\cfrac{2v_1\ v_2}{v_1+v_2}\)

A body describes the first half of the total distance with velocity v1

1.	A body describes the first half of the total distance with velocity v1 and the second half with velocity v2. The average velocity is :(A) \(\cfrac{v_1 +v_2}{2}\)(B) \(\cfrac{1}{v_1}+\cfrac{1}{v_2}\)(C) \(\cfrac{v_1 \,v_2}{v_1+v_2}\)(D) \(\cfrac{2v_1\ v_2}{v_1+v_2}\)
Answer» Correct option is (D) \(\cfrac{2v_1\ v_2}{v_1+v_2}\)

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A body describes the first half of the total distance with velocity v1 and the second half with velocity v2. The average velocity is :(A) \(\cfrac{v_1 +v_2}{2}\)(B) \(\cfrac{1}{v_1}+\cfrac{1}{v_2}\)(C) \(\cfrac{v_1 \,v_2}{v_1+v_2}\)(D) \(\cfrac{2v_1\ v_2}{v_1+v_2}\)

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