Form the top of a tower 100 m in height ...

Form the top of a tower `100 m` in height a ball is dropped and at the same time another ball is projected vertically upwards from the ground with a velcoity of `25 ms^(-1)`. Find when and where the two balls will meet.

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A stone is allowed to fall from the top of a tower 100m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25m//s . Calculate when and where the two stone will meet.

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