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physics

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Two objects are approaching an intersection. One is a 50 kg traveling at 8
m/s from east to west and the other is a 40 kg going from south to north at 12 m/s.
(a) Find the x and y components of the net momentum of this system.
(b) What are the magnitude and direction of the net momentum

  • physics - ,

    a. X = m1V1 = 50 * -8 = -400.
    Y = m2V2 =40 * 12 = 480.

    b. tanA = Y/X = 480/-400 = -1.20.
    Ar = -50.19 = Reference angle.
    A = -50.19 + 180 = 129.8o = Direction.

    Magnitude = X/cosA = -400/cos129.8 = 625.

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