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October 26, 2014

Homework Help: physics

Posted by ally on Friday, February 25, 2011 at 8:18pm.

Part 1
In the 1950ís, an experimental train that had a mass of 32800 kg was powered across a level track by a jet engine that produced a thrust of 4.37 ◊ 10^5N for a distance of 465 m.
Find the work done on the train.
Answer in units of J.

Part 2
Find the change in kinetic energy.
Answer in units of J.

Part 3
Find the final kinetic energy of the train if it
started from rest.
Answer in units of J.

Part 4
Find the final speed of the train assuming no
friction.
Answer in units of m/s.

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