27.
a)In the 1950’s, 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× 10^5 N for a distance of 465 m.Find the work done on the train.
Answer in units of J.
b)Find the change in kinetic energy.
Answer in units of J.
c)Find the final kinetic energy of the train if it started from rest.
Answer in units of J.
d)Find the final speed of the train assuming no friction.
Answer in units of m/s.