# Balls Thrown Up

**Classical Mechanics**Level 1

A very large number of balls are thrown vertically upwards in quick succession in such a way that the next ball is thrown when the previous one is at maximum height. If the maximum height reached by each ball is 45 meters, then find the number of balls thrown up in a minute.

Assume that \( g = -9.8\) m/s\(^2\), and ignore factors like wind resistance.