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An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum height of the arrow.

I found horizontal velocity = 25m/s, but I don't know what to do next.

  • Physics -

    h = Hi +Vi t -4.9 t^2
    0 = 30 + Vi * 4 -4.9 * 16
    solve for Vi, the initial velocity component up
    then tan angle = Vi/25

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