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JEE Main 2023 (30 Jan, Shift 2) · Distance, Displacement & Average Speed

Distance, Displacement & Average Speed question from JEE Main 2023 (30 Jan, Shift 2)

Q11JEE Main 2023 · 30 JAN · SHIFT 2Easy

Distance, Displacement & Average Speed

A vehicle travels $4\text{ km}$ with speed of $3\text{ km/h}$ and another $4\text{ km}$ with speed of $5\text{ km/h}$ , then its average speed is

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Answer: (a)

Equal distances: $v_{avg} = \frac{2v_1 v_2}{v_1 + v_2}$ .
$v_{avg} = \frac{2(3)(5)}{3 + 5} = \frac{30}{8} = 3.75$ km/h
So the answer is (a) 3.75 km/h.

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