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Relative Velocity

A particle is...

Question

A particle is projected up inclined plane such that its component of velocity along the incline is 10m/s. Time of flight is 2 sec and maximum height above the incline is 5m. Then velocity of projection will be:

A

10 m / s

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B

10 \sqrt{2} m / s

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C

5 \sqrt{2} m / s

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D

None

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Solution

The correct option is B $10 \sqrt{2} m / s$

= 5

Therefore,
Substituting (1) in (2):

Hence,

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