View the step-by-step solution to:


Hi I am doing and exam review studying and need help with this question and how to solve it. Please help!


A 800-kg car speeds up from rest to 38 mph in 4.1 seconds. What is the work done on the car and what is the average power of the car's engine? Use kJ and kW as the units and do not forget to convert mph to m/s.  

The work done on the car by the net force, W1 =?

The power of the engine, P =?

How much work is required to speed up this car from rest to 76 mph? W2 =?

How much work is required to speed up this car from 38 mph to 76 mph? W3 = ?

Top Answer

Work done; W 1 = 115.4 KJ Average engine... View the full answer

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question