someone help me with physics pls

Discussion in 'General Discussion' started by cottonon95, May 21, 2015.

  1. cottonon95
    Offline

    cottonon95 Well-Known Member

    Joined:
    Apr 1, 2015
    Messages:
    174
    Likes Received:
    31
    IGN:
    empire
    Level:
    157
    Guild:
    Ascension
    Hi I don't know how to solve this, please help.
    There's a boat crossing a river. Boat on water is 10m/s. Current is going up at 4m/s. And river/land is 4m/s. What angle must the boat travel to reach the other side? If the river is 1000m wide, what is the time to cross it
     
    cottonon95, May 21, 2015
    #1
  2. Luke
    Offline

    Luke Member

    Joined:
    Jun 3, 2014
    Messages:
    3
    Likes Received:
    1
    Srry for late reply, e=mc^2 hope this helps
     
    Luke, May 28, 2015
    #2
  3. Doritos
    Offline

    Doritos Donator

    Joined:
    Feb 13, 2014
    Messages:
    620
    Likes Received:
    363
    Location:
    Xanadu
    Country Flag:
    IGN:
    RoughKnight
    The real physics question is: how is the land moving? Wtf?
     
    Doritos, Jun 4, 2015
    #3
    Sovereign likes this.
  4. Jace
    Offline

    Jace Donator

    Joined:
    May 17, 2014
    Messages:
    337
    Likes Received:
    394
    Gender:
    Male
    Location:
    Maple Island
    Country Flag:
    IGN:
    Caboose
    Level:
    160
    Guild:
    #molerat
    I'm more interested in how he managed to divide the river by land.
     
    Jace, Jun 4, 2015
    #4
  5. Berchtold
    Offline

    Berchtold Well-Known Member

    Joined:
    Jun 4, 2014
    Messages:
    114
    Likes Received:
    149
    Gender:
    Male
    Location:
    Freemarket
    Country Flag:
    IGN:
    Ubarmensch
    Level:
    200
    There appears to be letters in your maths, what the fuck mane, those are two completely different numbers.
     
    Berchtold, Jun 4, 2015
    #5
  6. STYJ
    Offline

    STYJ Well-Known Member

    Joined:
    Jun 7, 2015
    Messages:
    124
    Likes Received:
    44
    Gender:
    Male
    IGN:
    None
    Draw out the question. Break the velocity into its x and y components and solve it. You do not need E=mc^2 for that question, but rather the constant acceleration formulas.

    Though like many have said, I've no idea what it means by the land is moving. If we're talking about different reference frames, you'd be going into the realm of special relativity.
     
    STYJ, Jun 8, 2015
    #6

Share This Page