Atoy train is pushed forward and released at xi = 4.0 m with a speed of 2.5 m/s. it rolls at a steady speed for 2.0 s, then one wheel begins to stick. the train comes to a stop 7.7 m from the point at which it was released.
what is the train's acceleration after its wheel begins to stick?

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.