Recent content by Asem

  1. Asem

    Angular Velocity of a Large Pendulum on Earth as seen from the stars

    I think the question ignores the fact that the Earth orbits the Sun. Plus, the Earth's radius is 6.37x10^6 m. Is that enough information to get it?
  2. Asem

    Angular Velocity of a Large Pendulum on Earth as seen from the stars

    No, there is no mentioning of a pendulum in this chapter except in this question.
  3. Asem

    Angular Velocity of a Large Pendulum on Earth as seen from the stars

    it's asking for the velocities of the points corresponding to points A and B on the surface of the Earth not pendulum motion.
  4. Asem

    Angular Velocity of a Large Pendulum on Earth as seen from the stars

    I don't understand the question. how am I supposed to find the magnitudes and directions of the velocity from the figure?
  5. Asem

    Find Initial Velocity of a projectile given flight time and angle

    I just have one more question; Vertical motion is symmetric in projectile right? So, is Initial velocity = Final velocity? If projectile is launched from ground level I mean.
  6. Asem

    Find Initial Velocity of a projectile given flight time and angle

    Vf=0, when t=1s Vf=Viy+at Viy=9.8*1 Viy=Visin 9.8=Visin(40) Vi=15.2 Thank you, sir
  7. Asem

    Find Initial Velocity of a projectile given flight time and angle

    If I can Vf=Viy+at Viy=-at Viy=-(-9.8*2) Viy=19.6 Viy=Vsin 19.6=Vsin40 V=30.5 The only problem is this is apparently wrong as there is no choice of answer that is 30.5
  8. Asem

    Find Initial Velocity of a projectile given flight time and angle

    can I say final velocity is equal to zero?
  9. Asem

    Find Initial Velocity of a projectile given flight time and angle

    Range, but to find that I need Vix
  10. Asem

    Find Initial Velocity of a projectile given flight time and angle

    Vix=Vcosθ Vix=0.76604*V Xf=Vixt Xf=0.77604V*2 V=Xf/1.55208