A ball is thrown upward from the ground with an initial speed of 25m/s. At the same instant, another ball is
dropped from a hot air balloon that is rising a 5 m/s
and is 15m high. After how long with the balls be at the
same height? At what height do the paths of the balls.
cross? Does the first ball ever cross paths with the
balloon? If so, when and where?

Which sentences describe point source pollution? in this type of pollution, the source of the pollution is single and easily identifiable. when runoff water from the melting of snow mixes with debris, it creates pollution. the runoff water, mixed with pollutants, reaches large areas with disastrous effects. alternatively, when a wastewater treatment plant releases harmful chemicals into a stream, the chemicals pollute the stream water because they are not treated for safety.