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Newtons law application-example

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In the 1950s, an experimental train that had a mass of 2.10 x10^4 kg was powered across a level track by a jet engine that produced a thrust of 5.45 x 10^5 N for a distance of 509 m. Assume that air resistance is negligible.

(a) Find the work done on the train.
J
(b) Find the change in kinetic energy.
J
(c) Find the final kinetic energy of the train if it started from rest.
J
(d) Find the final speed of the train if there were no friction.
m/s

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Solution Summary

This problem illustates teh releation between various physical quantities such as Energy, work, power etc.

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Mass of the train M = 2.10 x104 kg
Force (thrust) F= 5.45 x 105 N
Distance d = 509 m.

1. Work done W=F.d = 5.45x105 x ...

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