A ball of mass 1 Kg thrown vertic...

A ball of mass 1 Kg thrown vertically upwards and returns to the ground after 3 seconds . Another ball , thrown at `60 ^(@)` with vertical also stays in air for the same time before it toches the ground . The ratio of the two heights are

`1:3`

`1:2`

`1:1`

`2:1`

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