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: Momentum - Bull + Ball

  1. Nov 8, 2008 #1
    elastic

    a charging bull elephant with mass of 5230 kg comes directly towards you with a speed of 4.45 m/s. you toss a 0.150 kg rubber ball at the elephant with a speed of 7.91 m/s. When the ball bounces back to you what is its speed?

    not too sure about how to approach this question.. thanks!
     
  2. jcsd
  3. Nov 9, 2008 #2

    alphysicist

    User Avatar
    Homework Helper

    Hi vortec135,


    You've said it is an elastic collision. What is conserved in an elastic collision? What two equations are used in this case?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook