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A man of mass m is standing on the flat ...

A man of mass m is standing on the flat top of a cart of mass `2m`. The length and height of the cart is `L and H` respectively and it is at rest on a smooth horizontal ground. The man starts running from end A, speeds up and jumps out of the cart at point B with a velocity `u` relative to the cart in horizontal direction. Calculate the total horizontal distance covered by the man by the time he lands on the ground.

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The correct Answer is:
`(2)/(3)[L_+musqrt((2H)/(g))]`
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