From the top of a 100 m tower, a ball is dropped and at the same time another ball is projected upwards from the ground with a velocity of 25 m/s. Find when (in seconds) and where the two balls meet (distance measured from the ground in m).

Let the time at which they meet be \(t\) seconds and the place where the balls meet be \(d\) meters. Find \(d + t\)

**Assumptions and Details**

- The distance \(d\) is measured relative to the ground.
- \(g = 9.8 ms^{-2}\)

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