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March 26, 2017

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A brick is thrown upward from the top of a building at an angle of 40° to the horizontal and with an initial speed of 12 m/s. If the brick is in flight for 2.5 s, how tall is the building?

  • physics - ,

    Consider the vertical component of velocity. Vvertial=sin40 * 12

    hf=ho+Vi*t-4.9 t^2
    well ho is your unknown, hf=0, vi=12sin40, and you know time
    solve for ho

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