Results 1 to 2 of 2

Math Help - Somewhat physics...

  1. #1
    Newbie
    Joined
    Jul 2007
    Posts
    19

    Exclamation Somewhat physics...

    A construction worker drops a bolt while working on high-rise building 320 m above the ground. After t seconds, the bolt has fallen a distance of s metres, where s(t)= 5t^2, 0 < (or equal to) t < (or equal to) 8. The function that gives the height of the bolt above ground at time R(t)= 320-5t^2. Use this function to determine the velocity of the bolt at t= 2.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,940
    Thanks
    338
    Awards
    1
    Quote Originally Posted by madman1611 View Post
    A construction worker drops a bolt while working on high-rise building 320 m above the ground. After t seconds, the bolt has fallen a distance of s metres, where s(t)= 5t^2, 0 < (or equal to) t < (or equal to) 8. The function that gives the height of the bolt above ground at time R(t)= 320-5t^2. Use this function to determine the velocity of the bolt at t= 2.
    I have a problem with the equations. The coefficient in front of the t^2 in both of them is likely 0.5, not 5. Please check this.

    It doesn't affect the method to solve the problem, though. The speed of the bolt will be given by the time rate of change of the distance s(t):
    s^{\prime}(t) = 2 \cdot 0.5t = t

    So at t = 2 s, the speed is 2 m/s.

    -Dan
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Got a physics question or interested in physics?
    Posted in the Math Topics Forum
    Replies: 16
    Last Post: February 3rd 2014, 01:56 AM
  2. physics help...
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: February 17th 2009, 06:20 AM
  3. how do solve quantum physics or physics equations
    Posted in the Advanced Applied Math Forum
    Replies: 2
    Last Post: March 26th 2008, 04:33 AM
  4. Physics...
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: March 5th 2008, 07:31 PM
  5. physics, acceleration, physics problem
    Posted in the Math Topics Forum
    Replies: 3
    Last Post: September 29th 2007, 03:50 AM

Search Tags


/mathhelpforum @mathhelpforum