1. Not finding help here? Sign up for a free 30min 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!

Non-equilibrium applications of Newton's Laws of motion

  1. Nov 13, 2009 #1
    1. The problem statement, all variables and given/known data
    A 1380kg car is moving due east with an initial speed of 27 m/s . after 8.00s the car has slowed down to 17.0 m/s . Find the magnitude and direction of the net force that produces the deceleration


    2. Relevant equations
    Net force of x= MAx
    Net force of y= MAy


    3. The attempt at a solution
    I am not sure how to start this question. Can anyone give me hints to start out this questions?
     
  2. jcsd
  3. Nov 13, 2009 #2
    You know the mass, and can find the acceleration with the given data.
     
  4. Nov 14, 2009 #3

    Ok, you know the Velocity change in a certain amount of time.This is actually what we call "acceleration" and as you know if there is an acceleration then there must be a force acting in these conditions.So i advice you to calculate the acceleration then use Newton's 2nd law (F=m.a)....
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook