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!

Homework Help: Given kinetic energy and momentum, find mass and speed

  1. Nov 8, 2011 #1
    1. The problem statement, all variables and given/known data

    An object has a kinetic energy of 293 J and a momentum of magnitude 26.7 kg·m/s. Find the speed and the mass of the object.

    I don't know what equations I need...I know K=1/2mv^2 and P=Fv but I dont know how to relate them
  2. jcsd
  3. Nov 8, 2011 #2


    User Avatar
    Homework Helper

    Since you know the formulas, just equate them. You will have two equations with two unknowns to solve simultaneously.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook