If a freight train car loaded with coal has a mass of 150,000 Kg and is traveling at 18 m/s as it crosses the top of a small hill that is 12.5 meters above the surrounding area determine the KE and Gpe for that train car

the cellphone, they would then know if the killer would have contacted them or always hated them. or if it was a breakup. but if that is not the case, then it would be the clothing. to put in a bullet, it would have to be put in by hands. hands have finger prints which, would have giving you the answer of who done it.

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are there answer choices to this question? this seems like a question where you have options to choose from.

answer and explanation;