Post a New Question


posted by .

Part 1
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 × 10^5N 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
Answer in units of m/s.

  • physics -

    A) Start with the definition of Work.
    Force x Distance

    B) Work = change in KE. This assumes negligible friction. They should have told you a value to assume for friction, or to neglect it.

    C) Same as B

    D) Use KE definition to get V. The "no friction assumption" had to be made already, in B. This problem was not well thought out by the instructor

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question