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Dog sliding in a truck.

  1. Oct 10, 2011 #1
    dog sliding in a truck. urgent

    1. The problem statement, all variables and given/known data
    A dog is standing in the tail of a pickup truck. the tail bed is coated with ice causing the force of friction beween the dog and the truck to be zero. The truck is initially at rest, and then accelerates to the right, oving along a flat road. As seen from a stationary observer( watching the truck move to the right) the dog
    a moves to the righ but not as quickly as the truck, causing it to slide towards the back the truck
    b, moves to the right at the same rate as the truck so it doesnt slide
    c, doesn't mopve left or right but simply slides towards the back of the truck.


    2. Relevant equations


    f=ma
    3. The attempt at a solution
    not c??
     
  2. jcsd
  3. Oct 10, 2011 #2

    berkeman

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    Staff: Mentor

    Re: dog sliding in a truck. urgent

    Why do you say "not c?"
     
  4. Oct 10, 2011 #3
    Re: dog sliding in a truck. urgent

    um because sliding is moving. i dont know
     
  5. Oct 10, 2011 #4

    berkeman

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    Staff: Mentor

    Re: dog sliding in a truck. urgent

    Maybe moving relative to the truck. But the problem asks about what it looks like to the observer standing to the side of the truck...
     
  6. Oct 10, 2011 #5
    Re: dog sliding in a truck. urgent

    okay well to the observer it would slide back right?
     
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