An object is moving with a velocity of 2 ms $^{- 1}$ . Its velocity changes at a uniform rate to 5 ms $^{- 1}$ . The average velocity of the object is

3 ms

^{- 1}

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3.5 ms

^{- 1}

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4 ms

^{- 1}

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5.5 ms

^{- 1}

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Solution

The correct option is B 3.5 ms $^{- 1}$ `
Answer is A.
The average velocity is given as $\frac{(v_{1} + v_{2})}{2} = \frac{(2 + 5)}{2} = 3.5 m / s .$
Hence, the average velocity = 3.5 m/s.

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