1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Pushing a Cart

  1. Sep 20, 2010 #1
    1. The problem statement, all variables and given/known data

    Leaving all other quantities unchanged, what happens in the scenarios below?
    • If you use a cart with half the mass, you cover distance during pushing.
    • If you push twice as long, you reach final speed.
    • If you push twice as long, you cover distance during pushing.
    • If you double the force, you reach final speed.

    2. Relevant equations

    i think f=ma

    3. The attempt at a solution

    I thought the answers were double, double, half, double, but these are wrong. Any help is greatly appreciated!!
  2. jcsd
  3. Sep 20, 2010 #2
    This is sort of confusing...

    I would use s=0.5at^2

    and v=a*t

    based on this

    1) double, because a=2F/m

    2) twice as long distance or time?

    if time double

    3) 4x, because t is in the power of 2

    4) you should be able to figure this one out now.
  4. Sep 20, 2010 #3
    Thanks for your help!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Pushing Cart Date
Work done when pushing a cart Aug 3, 2015
Force - A cart pushing a block Sep 21, 2010
Cart pushed up a ramp Sep 7, 2010