Results 1 to 2 of 2

Math Help - Newtonian Mechanics 2

  1. #1
    Junior Member
    Joined
    Jan 2010
    Posts
    49

    Newtonian Mechanics 2

    An object of mass m kg is given an upward velocity of 16 m/sec from rest, 16 m above the ground. Assume that the gravity is the only force acting on it, when will the object hit the ground and at what velocity will it hit the ground? (gravity, g = 10 m/sec2)
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor arbolis's Avatar
    Joined
    Apr 2008
    From
    Teyateyaneng
    Posts
    1,000
    Awards
    1
    Quote Originally Posted by bobey View Post
    An object of mass m kg is given an upward velocity of 16 m/sec from rest, 16 m above the ground. Assume that the gravity is the only force acting on it, when will the object hit the ground and at what velocity will it hit the ground? (gravity, g = 10 m/sec2)
    Newton's second law states that \vec F=m \vec a which is worth m \vec g in this example.
    Notice that a(t)=v'(t)=r''(t) since it's a 1 dimensional problem. So a(t)=g.
    Mathematically you have g=\frac{dv}{dt}\Rightarrow g dt =dv.
    Try to take it from there. How would you go to find out v(t)?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. newtonian mechanics
    Posted in the Math Topics Forum
    Replies: 3
    Last Post: June 4th 2010, 04:14 AM
  2. Newtonian Mechanics - the movement of a particles
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: March 6th 2010, 03:29 AM
  3. Newtonian Mechanics 1
    Posted in the Advanced Applied Math Forum
    Replies: 2
    Last Post: February 25th 2010, 08:43 AM
  4. Newtonian mechanics vector notation
    Posted in the Advanced Applied Math Forum
    Replies: 1
    Last Post: May 16th 2009, 07:01 AM
  5. Newtonian Method, just need algebra help
    Posted in the Calculus Forum
    Replies: 2
    Last Post: October 21st 2007, 09:22 PM

Search Tags


/mathhelpforum @mathhelpforum