Results 1 to 2 of 2
Like Tree1Thanks
  • 1 Post By earboth

Math Help - Motion of projectiles

  1. #1
    Member srirahulan's Avatar
    Joined
    Apr 2012
    From
    Srilanka
    Posts
    173

    Arrow Motion of projectiles

    A lunar landing module is descending to the moon's surface at a steady velocity of 10ms-1.At a height of 120m,a small object falls from its landing gear.Taking the moon's gravitational accleration as 1.6 ms-2,at what speed,in ms-1,does the object strike the moon?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,829
    Thanks
    123

    Re: Motion of projectiles

    Quote Originally Posted by srirahulan View Post
    A lunar landing module is descending to the moon's surface at a steady velocity of 10ms-1.At a height of 120m,a small object falls from its landing gear.Taking the moon's gravitational accleration as 1.6 ms-2,at what speed,in ms-1,does the object strike the moon?
    1. Determine the time from the distance:

    d = v_0 \cdot t + \frac12 \cdot a \cdot t^2

    with v_0 = 10\ \frac ms, ~ a = 1.6\ \frac m{s^2}, d = 120 \ m

    You should come out with t = 7.5 s

    2. Use the value of the time to determine the final velocity:

    v = v_0 + a\cdot t

    You should come out with v = 22\ \frac ms
    Thanks from srirahulan
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Projectiles
    Posted in the Math Topics Forum
    Replies: 3
    Last Post: November 21st 2010, 07:13 AM
  2. Projectiles
    Posted in the Math Topics Forum
    Replies: 4
    Last Post: June 23rd 2010, 06:47 AM
  3. Projectiles
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: January 8th 2010, 02:46 AM
  4. projectiles
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: March 13th 2009, 10:22 AM
  5. Replies: 1
    Last Post: February 19th 2009, 02:30 PM

Search Tags


/mathhelpforum @mathhelpforum