Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Kinematics/Motion in 3-Space

  1. Mar 6, 2009 #1
    1. The problem statement, all variables and given/known data

    A projectile fired down the y-axis with V0 = 300 ft/s, hits a target 500ft away. Assume constant force is acting on projectile at 60ft/s in negative z direction. Assume second constant force acting on projectile in negative x direction at 45ft/s.

    Find angle of elevation (theta) of the launch and angle of correction (Beta) in x direction.

    Find vector valued function r(t) representing path of projectile.

    Find total distance traveled by projectile.

    Find maximum height reached by projectile.

    Find time it takes projectile to hit target.

    2. Relevant equations
    Kinematic equations.

    3. The attempt at a solution

    The constant force from negative z and negative x directions are completely throwing me off. Help would be appreciated, taking me through step by step. Thank you.
  2. jcsd
  3. Mar 6, 2009 #2


    User Avatar
    Homework Helper

    You will need to modify your treatment of the Z motion with the additional velocity they provide. (And the X velocity affects X displacement.)

    Note they call it a force, though it's not in the units of Force. They apparently want you to treat it as a constant velocity adjustment.
    Last edited: Mar 6, 2009
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook