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-   -   Relative velocity (https://www.askmehelpdesk.com/showthread.php?t=319735)

  • Feb 20, 2009, 03:10 AM
    simmon
    Relative velocity
    Ball is thrown at 16.1 m/s inside a boxcar
    Moving along the tracks at 29.4 m/s .
    What is the speed of the ball relative to the
    Ground if the ball is thrown forward? Answer
    In units of m/s.
  • Feb 22, 2009, 07:44 PM
    sarnian
    simmon


    This is your homework, and you have to do the thinking. I just provide hints.

    The car and everything in it is moving forwards at 29.4 m/s.
    So that ball is already moving forwards at 29.4 m/s.
    And than you add 16.1 m/s forwards to that.
    So what speed forwards will that ball have than?

    Brainteaser : what would (relative to the ground) the speed of the ball be, if thrown backwards at 29.4 m/s?

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