Explore BrainMass

Explore BrainMass

    Word problem - work, power, energy

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Step 1: A 240 horsepower car beginning at a stop goes 1/10 of a mile. At optimum performance, what is the maximum speed in miles per hour the car can reach? Feet per minute?

    Step 2: How many feet have been traveled in a 240 horsepower car when the speed reaches 35 MPH at optimum performance? what fraction of a mile is that distance? If any additional info is needed to answer problem let me know what it is so I can provide it.

    © BrainMass Inc. brainmass.com March 4, 2021, 5:51 pm ad1c9bdddf
    https://brainmass.com/chemistry/energetics-and-thermodynamics/word-problem-work-power-energy-14813

    Solution Preview

    The car can do work at the rate of 240*746 Joules/sec. If it is doing work at this rate, the time taken by it to cover a distance of (1/10) mile can be found.
    (1/10)miles = 0.1 * 1.6 km = 160meters....(1)

    HP = 240*746 = 179040 J/s = 179040 Newton meter/sec ---(2)

    Newton meter is the work done = Force*distance = m*a*160

    (we have S = 0+1/2 a t^2 ==> a = 2s/t^2)

    acceleration ...

    Solution Summary

    An easy to understand solution is provided with all mathematical steps.

    $2.49

    ADVERTISEMENT