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Application of Projectile to a Height

Two particles...

Question

Two particles of same mass are projected simultaneously with same speed $20 m s^{- 1}$ from the top of a tower of height $20 m$ . One is projected vertically upwards and other projected horizontally. The maximum height attained by centre of mass from the ground will be $(g = 10 m s^{- 2})$

A

10 \sqrt{2} m

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B

20 m

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C

25 \sqrt{2} m

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D

5 m

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Solution

The correct option is A $20 m$

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