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2D Kinematics question

  1. Jan 12, 2014 #1
    1. The problem statement, all variables and given/known data

    http://postimg.org/image/bh4tzmd4l/ [Broken]

    Can someone explain to me what "acceleration of the truck relative to the crate means"?

    What should I do first in trying to solve this?
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Jan 12, 2014 #2

    Andrew Mason

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    It means the difference between the acceleration of the truck and the acceleration of the crate. From that, I think you can figure out what you have to do in order to start.

    AM
     
    Last edited by a moderator: May 6, 2017
  4. Jan 12, 2014 #3
    thanks, I have another question

    http://postimg.org/image/81muw26tl/ [Broken]

    I don't understand what the value h is in this question and how its relevant to finding the distance AB
     
    Last edited by a moderator: May 6, 2017
  5. Jan 12, 2014 #4

    haruspex

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    You are to take h as the height of the bottom end of the ramp above the surface of the slope immediately below it. The slope continues down at angle beta from there.
     
    Last edited by a moderator: May 6, 2017
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