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!

Physics 12 impulse question

  1. Jun 29, 2013 #1
    A 5.0 kg object is accelerated from rest to 6.0 m/s while moving 2.0 m across a level
    surface. If the force of friction is 4.0 N, calculate the power output

    I used d=vt to find the time which was .33sec then i put that into P=Fd/t and had (49-4)(2)/.35 and got 270 Watts
  2. jcsd
  3. Jun 29, 2013 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    Cool - was there a question in all that?
    Is there some role the v-t graph could play?
    Last edited: Jun 29, 2013
  4. Jun 29, 2013 #3
    d = vt is applicable only for constant velocities. The object is accelerating in this case. You must use a kinematics equation to find the time - you know the initial and final velocities, and the distance traveled.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Physics 12 impulse question