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Math Help - Vectors 2 different questions

  1. #1
    Newbie Altami's Avatar
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    Vectors 2 different questions

    Hey everybody this is my first time finding a forum that is specially dedicated to math....which is great! Anyways I have two different questions both I have solved but I would like to know if they are right.

    1. A force of 125lb makes an angle of 65 degrees with a force of 250lb. Find the magnitude of the resultant force and find the angle between the resultant force makes with the 250lb force.

    O.K. for this question I got 323.3lb=Magnitude of resultant. Angle=20.5 Degrees

    2. What bearing and Airspeed are required for a plane to fly 600 miles due north in 1.5 hrs if the wind is blowing form the west at 28 mph?

    Airspeed I got 401mph. Bearing I got 94 degrees of N 94 W.

    Again I would like confirmation on both these questions thanks!
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  2. #2
    MHF Contributor
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    Quote Originally Posted by Altami View Post
    Hey everybody this is my first time finding a forum that is specially dedicated to math....which is great! Anyways I have two different questions both I have solved but I would like to know if they are right.

    1. A force of 125lb makes an angle of 65 degrees with a force of 250lb. Find the magnitude of the resultant force and find the angle between the resultant force makes with the 250lb force.

    O.K. for this question I got 323.3lb=Magnitude of resultant. Angle=20.5 Degrees

    2. What bearing and Airspeed are required for a plane to fly 600 miles due north in 1.5 hrs if the wind is blowing form the west at 28 mph?

    Airspeed I got 401mph. Bearing I got 94 degrees of N 94 W.

    Again I would like confirmation on both these questions thanks!
    #1 is fine

    #2 ... airspeed ok , direction is 4 degrees W of N (in air navigation terms, a heading of 356 degrees relative to True North)
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