1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Total resistive force question.

  1. Jun 2, 2015 #1
    Imagine a boat with a skier behind it (connected with a rope).

    Mass of boat=2000Kg
    Mass of skier=80Kg
    At 20m/s the boat engine has a power output of 140kW

    Calculate the total resistive force.


    Is the answer right ? I doubt my answer, even if its really easy, because I totally neclected the skier.

  2. jcsd
  3. Jun 2, 2015 #2
    It's correct. The masses are irrelevant.
  4. Jun 2, 2015 #3
    Okay, Thank you!
  5. Jun 2, 2015 #4
    I think that 140kW is the total power. So is ok.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook