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!

Ballistic Motion using Newton's Laws

  1. Nov 3, 2007 #1
    A rocket-powered hockey puck has a thrust of 1.20 and a total mass of 1.50 . It is released from rest on a frictionless table, 3.20 from the edge of a 3.60 drop. The front of the rocket is pointed directly toward the edge. How far does the puck land from the base of the table?

    Okay, so I found the accleration of the puck in the x-direction to be 0.8m/s/s and the difference in time between the moment it is at the end of the table to be 0.857s. But past this I have been unable to find initial velocity or final velocity or anything that I could plug into a kinematics equation to help me find the final position of the puck, on the x-axis.
  2. jcsd
  3. Nov 3, 2007 #2


    User Avatar

    Staff: Mentor

    One should include units, but it appears one is using SI or mks.

    and accelerates at 0.8 m/2 over a distance of 3.2 m.


    The puck then falls 3.6 m under the influence of gravity with no initial vertical velocity, but it has some horizontal velocity and perhaps horizontal acceleration(?).


    ref - http://hyperphysics.phy-astr.gsu.edu/hbase/traj.html
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?