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Two particles of same mass are projected...

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

A

`10sqrt(2)m`

B

`25m`

C

`25sqrt(2)m`

D

`5m`

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The correct Answer is:
B
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