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A juggler keeps on moving four balls in ...

A juggler keeps on moving four balls in the air throwing the balls after regular intervals. When one ball leaves his hand `("speed" = 20 ms^-1)` the positions of other balls (height in m) `("Take" g = 10 ms^-2)`.

A

`10m, 20m, 10m`

B

`15m, 20m, 15m`

C

`5m, 15m, 20m`

D

`5m, 10m, 20m`

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